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In-hospital mortality increased in COPD patients with acute exacerbations and high serum phosphate levels
found significantly higher in-hospital mortality among AECOPD patients with high serum phosphate levels. The finding, according to Siqi Li et al. in a preproof HELIYON article, suggests that hyperphosphatemia may be a high-risk factor for AECOPD-related in-hospital mortality.
Phosphorus is key to several physiological processes, among them energy metabolism, bone mineralization, membrane transport, and intracellular signaling. Li et al. pointed out that in patients with multiple diseases, hyperphosphatemia is associated with increased mortality. In the development of COPD specifically, acute exacerbations have been shown in several recent studies to be an important adverse event conferring heightened mortality risk. Despite many efforts, AECOPD mortality rates remain high, making identification of potential factors, Li et al. stated, crucial for improving outcomes in high-risk patients.
The electronic Intensive Care Unit Collaborative Research Database (eICU-CRD) holds data associated with over 200,000 patient stays, providing a large sample size for research studies. To determine the relationship between serum phosphate and in-hospital mortality in AECOPD patients, investigators analyzed data from a total of 1,199 AECOPD patients (mean age, 68 years; ~55% female) enrolled in eICU-CRD and divided them into three groups according to serum phosphate level tertiles: lowest tertile (serum phosphate ≤ 3.0 mg/dL, n = 445), median tertile (serum phosphate > 3.0 mg/dL and ≤ 4.0 mg/dL, n = 378), and highest tertile (serum phosphate > 4.0 mg/dL, n = 376). The Li et al. study’s primary outcome was all-cause in-hospital mortality, defined as survival to hospital discharge. Secondary outcomes included length of stay (LOS) in the intensive care unit (ICU), LOS in the hospital, and all-cause ICU mortality.
The Li et al. analysis of patient characteristics showed that patients in the highest tertile of serum phosphate had significantly higher body mass index (BMI) (P < .001), lower temperature (P < .001), lower heart rate (P < .001), lower mean arterial blood pressure (P = .011), higher creatinine (P < .001), higher potassium (P < .001), higher sequential organ failure assessment (SOFA) (P < .001), higher acute physiology and chronic health evaluation (APACHE IV) (P < .001), and higher ICU mortality (P < .001). Also, patients with higher serum phosphate levels were more likely to receive renal replacement therapy (RRT) (P < .001) and vasoactive drugs (P = .003) than those in the lower serum phosphate group. Such differences were also observed for age (P = .021), calcium level (P = .023), sodium level (P = .039), hypertension (P = .014), coronary artery disease (P = .004), diabetes (P = .017), and chronic kidney disease (P < .001). No significant differences were observed for gender, respiration rate, SpO2, white blood cell count, hemoglobin, platelets, cirrhosis, stroke, ventilation, LOS in ICU, and LOS in hospital (P > .05).
A univariate logistic regression analysis performed to determine the relationship between serum phosphate level and risk of in-hospital mortality revealed that higher serum phosphate level correlated with increased in-hospital mortality (odds ratio, 1.30; 95% confidence interval, 1.16-1.46; P < .001).
Li et al. posited that several mechanisms may explain increased mortality at higher serum phosphate levels in AECOPD patients: increased serum phosphate induces vascular calcification and endothelial dysfunction, leading to organ dysfunction; hyperphosphatemia causes oxidative stress, cell apoptosis, and inflammation, all of which are involved in the pathogenesis of AECOPD, and a higher phosphate diet exacerbates aging and lung emphysema phenotypes; restriction of phosphate intake and absorption relieves these phenotypes and alveolar destruction, which might contribute to the development of AECOPD.
Li et al. concluded: “Reducing serum phosphate levels may be a therapeutic strategy to improve prognosis of AECOPD patients.”
“This large retrospective analysis on eICU database in the U.S. revealed elevated serum phosphate levels with increased in-hospital mortality among patients experiencing acute exacerbation of COPD,” commented Dharani Narendra, MD, assistant professor in medicine, at Baylor College of Medicine, Houston. “This association, previously observed in various chronic conditions including COPD, particularly in men, is now noted to apply to both genders, irrespective of chronic kidney disease. The study also hints at potential mechanisms for elevated phosphate levels, such as inflammation, oxidative stress, and cell apoptosis in AECOPD, as well as a high-phosphate diet.”
She told this news organization also, “It remains imperative to ascertain whether treating hyperphosphatemia or implementing dietary phosphate restrictions can reduce mortality or prevent AECOPD episodes. These demand additional clinical trials to establish a definitive cause-and-effect relationship and to guide potential treatment and prevention strategies.”
Noting study limitations, Li et al. stated that many variables, such as smoking, exacerbation frequency, severity, PH, PaO2, PaCO2, and lactate, were not included in this study owing to more than 20% missing values.
This work was supported by the National Natural Science Foundation of China, Scientific Research Fund of Hunan Provincial Education Department, Hunan Provincial Natural Science Foundation, and Special fund for rehabilitation medicine of the National Clinical Research Center for Geriatric Disorders Clinical Research Fund. The authors declare no competing interests.
found significantly higher in-hospital mortality among AECOPD patients with high serum phosphate levels. The finding, according to Siqi Li et al. in a preproof HELIYON article, suggests that hyperphosphatemia may be a high-risk factor for AECOPD-related in-hospital mortality.
Phosphorus is key to several physiological processes, among them energy metabolism, bone mineralization, membrane transport, and intracellular signaling. Li et al. pointed out that in patients with multiple diseases, hyperphosphatemia is associated with increased mortality. In the development of COPD specifically, acute exacerbations have been shown in several recent studies to be an important adverse event conferring heightened mortality risk. Despite many efforts, AECOPD mortality rates remain high, making identification of potential factors, Li et al. stated, crucial for improving outcomes in high-risk patients.
The electronic Intensive Care Unit Collaborative Research Database (eICU-CRD) holds data associated with over 200,000 patient stays, providing a large sample size for research studies. To determine the relationship between serum phosphate and in-hospital mortality in AECOPD patients, investigators analyzed data from a total of 1,199 AECOPD patients (mean age, 68 years; ~55% female) enrolled in eICU-CRD and divided them into three groups according to serum phosphate level tertiles: lowest tertile (serum phosphate ≤ 3.0 mg/dL, n = 445), median tertile (serum phosphate > 3.0 mg/dL and ≤ 4.0 mg/dL, n = 378), and highest tertile (serum phosphate > 4.0 mg/dL, n = 376). The Li et al. study’s primary outcome was all-cause in-hospital mortality, defined as survival to hospital discharge. Secondary outcomes included length of stay (LOS) in the intensive care unit (ICU), LOS in the hospital, and all-cause ICU mortality.
The Li et al. analysis of patient characteristics showed that patients in the highest tertile of serum phosphate had significantly higher body mass index (BMI) (P < .001), lower temperature (P < .001), lower heart rate (P < .001), lower mean arterial blood pressure (P = .011), higher creatinine (P < .001), higher potassium (P < .001), higher sequential organ failure assessment (SOFA) (P < .001), higher acute physiology and chronic health evaluation (APACHE IV) (P < .001), and higher ICU mortality (P < .001). Also, patients with higher serum phosphate levels were more likely to receive renal replacement therapy (RRT) (P < .001) and vasoactive drugs (P = .003) than those in the lower serum phosphate group. Such differences were also observed for age (P = .021), calcium level (P = .023), sodium level (P = .039), hypertension (P = .014), coronary artery disease (P = .004), diabetes (P = .017), and chronic kidney disease (P < .001). No significant differences were observed for gender, respiration rate, SpO2, white blood cell count, hemoglobin, platelets, cirrhosis, stroke, ventilation, LOS in ICU, and LOS in hospital (P > .05).
A univariate logistic regression analysis performed to determine the relationship between serum phosphate level and risk of in-hospital mortality revealed that higher serum phosphate level correlated with increased in-hospital mortality (odds ratio, 1.30; 95% confidence interval, 1.16-1.46; P < .001).
Li et al. posited that several mechanisms may explain increased mortality at higher serum phosphate levels in AECOPD patients: increased serum phosphate induces vascular calcification and endothelial dysfunction, leading to organ dysfunction; hyperphosphatemia causes oxidative stress, cell apoptosis, and inflammation, all of which are involved in the pathogenesis of AECOPD, and a higher phosphate diet exacerbates aging and lung emphysema phenotypes; restriction of phosphate intake and absorption relieves these phenotypes and alveolar destruction, which might contribute to the development of AECOPD.
Li et al. concluded: “Reducing serum phosphate levels may be a therapeutic strategy to improve prognosis of AECOPD patients.”
“This large retrospective analysis on eICU database in the U.S. revealed elevated serum phosphate levels with increased in-hospital mortality among patients experiencing acute exacerbation of COPD,” commented Dharani Narendra, MD, assistant professor in medicine, at Baylor College of Medicine, Houston. “This association, previously observed in various chronic conditions including COPD, particularly in men, is now noted to apply to both genders, irrespective of chronic kidney disease. The study also hints at potential mechanisms for elevated phosphate levels, such as inflammation, oxidative stress, and cell apoptosis in AECOPD, as well as a high-phosphate diet.”
She told this news organization also, “It remains imperative to ascertain whether treating hyperphosphatemia or implementing dietary phosphate restrictions can reduce mortality or prevent AECOPD episodes. These demand additional clinical trials to establish a definitive cause-and-effect relationship and to guide potential treatment and prevention strategies.”
Noting study limitations, Li et al. stated that many variables, such as smoking, exacerbation frequency, severity, PH, PaO2, PaCO2, and lactate, were not included in this study owing to more than 20% missing values.
This work was supported by the National Natural Science Foundation of China, Scientific Research Fund of Hunan Provincial Education Department, Hunan Provincial Natural Science Foundation, and Special fund for rehabilitation medicine of the National Clinical Research Center for Geriatric Disorders Clinical Research Fund. The authors declare no competing interests.
found significantly higher in-hospital mortality among AECOPD patients with high serum phosphate levels. The finding, according to Siqi Li et al. in a preproof HELIYON article, suggests that hyperphosphatemia may be a high-risk factor for AECOPD-related in-hospital mortality.
Phosphorus is key to several physiological processes, among them energy metabolism, bone mineralization, membrane transport, and intracellular signaling. Li et al. pointed out that in patients with multiple diseases, hyperphosphatemia is associated with increased mortality. In the development of COPD specifically, acute exacerbations have been shown in several recent studies to be an important adverse event conferring heightened mortality risk. Despite many efforts, AECOPD mortality rates remain high, making identification of potential factors, Li et al. stated, crucial for improving outcomes in high-risk patients.
The electronic Intensive Care Unit Collaborative Research Database (eICU-CRD) holds data associated with over 200,000 patient stays, providing a large sample size for research studies. To determine the relationship between serum phosphate and in-hospital mortality in AECOPD patients, investigators analyzed data from a total of 1,199 AECOPD patients (mean age, 68 years; ~55% female) enrolled in eICU-CRD and divided them into three groups according to serum phosphate level tertiles: lowest tertile (serum phosphate ≤ 3.0 mg/dL, n = 445), median tertile (serum phosphate > 3.0 mg/dL and ≤ 4.0 mg/dL, n = 378), and highest tertile (serum phosphate > 4.0 mg/dL, n = 376). The Li et al. study’s primary outcome was all-cause in-hospital mortality, defined as survival to hospital discharge. Secondary outcomes included length of stay (LOS) in the intensive care unit (ICU), LOS in the hospital, and all-cause ICU mortality.
The Li et al. analysis of patient characteristics showed that patients in the highest tertile of serum phosphate had significantly higher body mass index (BMI) (P < .001), lower temperature (P < .001), lower heart rate (P < .001), lower mean arterial blood pressure (P = .011), higher creatinine (P < .001), higher potassium (P < .001), higher sequential organ failure assessment (SOFA) (P < .001), higher acute physiology and chronic health evaluation (APACHE IV) (P < .001), and higher ICU mortality (P < .001). Also, patients with higher serum phosphate levels were more likely to receive renal replacement therapy (RRT) (P < .001) and vasoactive drugs (P = .003) than those in the lower serum phosphate group. Such differences were also observed for age (P = .021), calcium level (P = .023), sodium level (P = .039), hypertension (P = .014), coronary artery disease (P = .004), diabetes (P = .017), and chronic kidney disease (P < .001). No significant differences were observed for gender, respiration rate, SpO2, white blood cell count, hemoglobin, platelets, cirrhosis, stroke, ventilation, LOS in ICU, and LOS in hospital (P > .05).
A univariate logistic regression analysis performed to determine the relationship between serum phosphate level and risk of in-hospital mortality revealed that higher serum phosphate level correlated with increased in-hospital mortality (odds ratio, 1.30; 95% confidence interval, 1.16-1.46; P < .001).
Li et al. posited that several mechanisms may explain increased mortality at higher serum phosphate levels in AECOPD patients: increased serum phosphate induces vascular calcification and endothelial dysfunction, leading to organ dysfunction; hyperphosphatemia causes oxidative stress, cell apoptosis, and inflammation, all of which are involved in the pathogenesis of AECOPD, and a higher phosphate diet exacerbates aging and lung emphysema phenotypes; restriction of phosphate intake and absorption relieves these phenotypes and alveolar destruction, which might contribute to the development of AECOPD.
Li et al. concluded: “Reducing serum phosphate levels may be a therapeutic strategy to improve prognosis of AECOPD patients.”
“This large retrospective analysis on eICU database in the U.S. revealed elevated serum phosphate levels with increased in-hospital mortality among patients experiencing acute exacerbation of COPD,” commented Dharani Narendra, MD, assistant professor in medicine, at Baylor College of Medicine, Houston. “This association, previously observed in various chronic conditions including COPD, particularly in men, is now noted to apply to both genders, irrespective of chronic kidney disease. The study also hints at potential mechanisms for elevated phosphate levels, such as inflammation, oxidative stress, and cell apoptosis in AECOPD, as well as a high-phosphate diet.”
She told this news organization also, “It remains imperative to ascertain whether treating hyperphosphatemia or implementing dietary phosphate restrictions can reduce mortality or prevent AECOPD episodes. These demand additional clinical trials to establish a definitive cause-and-effect relationship and to guide potential treatment and prevention strategies.”
Noting study limitations, Li et al. stated that many variables, such as smoking, exacerbation frequency, severity, PH, PaO2, PaCO2, and lactate, were not included in this study owing to more than 20% missing values.
This work was supported by the National Natural Science Foundation of China, Scientific Research Fund of Hunan Provincial Education Department, Hunan Provincial Natural Science Foundation, and Special fund for rehabilitation medicine of the National Clinical Research Center for Geriatric Disorders Clinical Research Fund. The authors declare no competing interests.
FROM HELIYON
Pediatric sleep-disordered breathing linked to multilevel risk factors
In the first study evaluating pediatric sleep-disordered breathing (SDB) from both indoor environment and neighborhood perspectives, multilevel risk factors were revealed as being associated with SDB-related symptoms. Beyond known associations with environmental tobacco smoke (ETS), .
Although it has been well known that pediatric SDB affects low socioeconomic status (SES) children disproportionately, the roles of multilevel risk factor drivers including individual health, household SES, indoor exposures to environmental tobacco smoke, pests, and neighborhood characteristics have not been well studied, Gueye-Ndiaye et al. wrote in CHEST Pulmonary.
Pediatric SDB, a known risk factor for many health, neurobehavioral, and functional outcomes, includes habitual snoring and obstructive sleep apnea and may contribute to health disparities. Adenotonsillar hypertrophy and obesity are the most commonly recognized risk factors for SDB in generally healthy school-aged children. A role for other risk factors, however, is suggested by the fact that Black children have a fourfold increased risk for obstructive sleep apnea (OSA), compared with White children, unexplained by obesity, and have decreased response to treatment of OSA with adenotonsillectomy, compared with White children. Several studies point in the direction of neighborhood disadvantages as factors in heightened SDB prevalence or severity, Gueye-Ndiaye et al. stated.
The authors performed cross-sectional analyses on data recorded from 303 children (aged 6-12 years) enrolled in the Environmental Assessment of Sleep Youth (EASY) study from 2018 to 2022. Among them, 39% were Hispanic, Latino, Latina, or Spanish origin, 30% were Black or African American, 22% were White, and 11% were other. Maternal education attainment of a high school diploma or less was reported in 27%, and 65% of the sample lived in disadvantaged neighborhoods. Twenty-eight percent of children met criteria for objective SDB (Apnea-Hypopnea Index/Oxygen Desaturation Index ≥ 5/hr). Exposure documentation was informed by caregiver reports, assays of measured settled dust from the child’s bedroom, and neighborhood-level census data from which the Childhood Opportunity Index characterizing neighborhood disadvantage (ND) was derived. The study primary outcome was the SDB-related symptom burden assessed by the OSA-18 questionnaire total score.
Compared with children with no adverse indoor exposures to ETS and pests, children with such exposures had an approximately 4-12 point increase in total OSA-18 scores, and the increase among those with exposure to both ETS and pests was about 20 points (approximately a 1.3 standard deviation increase), Gueye-Ndiaye et al. reported.
In models adjusted for age, sex, minority race, and ethnicity, low maternal education was associated with a 7.55 (95% confidence interval, 3.44-11.66; P < .01) increased OSA-18 score. In models adjusted for sociodemographics including maternal education, history of asthma and allergic rhinitis were associated with a 13.63 (95% CI, 9.44-17.82; P < .01) and a 6.95 (95% CI, 2.62-11.29; P < .02) increased OSA-18 score, respectively. The authors noted that prior Canadian studies have shown OSA to be three times as likely in children with mothers reporting less than a high school education than in children with university educated mothers.
Speculating on the drivers of this association, they noted that the poor air quality due to tobacco smoke and allergen exposures to rodents, mold, and cockroaches are known contributors to asthma symptoms. Despite the differing pathogenesis of OSA and asthma, they suggest overlapping risk factors. Irritants and allergens may exacerbate SDB by stimulating immune responses manifested as adenotonsillar hypertrophy and by amplifying nasopharyngeal inflammation, adversely affecting upper airway patency. While ETS was not common in the sample, it was associated strongly with SDB. Gueye-Ndiaye et al. also showed associations between pest exposure, bedroom dust, and SDB symptoms. The findings, they concluded, support the importance of household- and bedroom-environmental conditions and sleep health.
OSA-18 scores were also elevated by about 7-14 points with allergic rhinitis and asthma, respectively. The findings, Gueye-Ndiaye et al. stated, underscore that asthma prevention strategies can be leveraged to address SDB disparities. No amplification of pest exposure effects, however, was found for asthma or allergic rhinitis.
“This is an incredibly important study, one that adds to our understanding of the risk factors that contribute to pediatric sleep health disparities,” said assistant professor of pediatrics Anne C. Coates, MD, Tufts University, Boston. “We have previously understood risk factors for sleep-disordered breathing like adenotonsillar hypertrophy, but this adds other elements like environmental tobacco smoke, pests, and home and neighborhood factors,” she told this news organization. “One of the most important takeaways is that beyond the importance of accurate diagnosis, there is the importance of advocating for our patients to ensure that they have the healthiest homes and neighborhoods. We need to inspire our colleagues to be advocates – for example – for pest mitigation, for antismoking policies, for every policy preventing the factors that contribute to the burden of disease.”
Dr. Coates is coauthor of “Advocacy and Health Equity: The Role of the Pediatric Pulmonologist,” currently in press (Clinics in Chest Medicine), and a member of the CHEST Physician Editorial Board.
The authors noted that a study limitation was that the sample was from one geographic area (Boston). Neither the authors nor Dr. Coates listed any conflicts.
In the first study evaluating pediatric sleep-disordered breathing (SDB) from both indoor environment and neighborhood perspectives, multilevel risk factors were revealed as being associated with SDB-related symptoms. Beyond known associations with environmental tobacco smoke (ETS), .
Although it has been well known that pediatric SDB affects low socioeconomic status (SES) children disproportionately, the roles of multilevel risk factor drivers including individual health, household SES, indoor exposures to environmental tobacco smoke, pests, and neighborhood characteristics have not been well studied, Gueye-Ndiaye et al. wrote in CHEST Pulmonary.
Pediatric SDB, a known risk factor for many health, neurobehavioral, and functional outcomes, includes habitual snoring and obstructive sleep apnea and may contribute to health disparities. Adenotonsillar hypertrophy and obesity are the most commonly recognized risk factors for SDB in generally healthy school-aged children. A role for other risk factors, however, is suggested by the fact that Black children have a fourfold increased risk for obstructive sleep apnea (OSA), compared with White children, unexplained by obesity, and have decreased response to treatment of OSA with adenotonsillectomy, compared with White children. Several studies point in the direction of neighborhood disadvantages as factors in heightened SDB prevalence or severity, Gueye-Ndiaye et al. stated.
The authors performed cross-sectional analyses on data recorded from 303 children (aged 6-12 years) enrolled in the Environmental Assessment of Sleep Youth (EASY) study from 2018 to 2022. Among them, 39% were Hispanic, Latino, Latina, or Spanish origin, 30% were Black or African American, 22% were White, and 11% were other. Maternal education attainment of a high school diploma or less was reported in 27%, and 65% of the sample lived in disadvantaged neighborhoods. Twenty-eight percent of children met criteria for objective SDB (Apnea-Hypopnea Index/Oxygen Desaturation Index ≥ 5/hr). Exposure documentation was informed by caregiver reports, assays of measured settled dust from the child’s bedroom, and neighborhood-level census data from which the Childhood Opportunity Index characterizing neighborhood disadvantage (ND) was derived. The study primary outcome was the SDB-related symptom burden assessed by the OSA-18 questionnaire total score.
Compared with children with no adverse indoor exposures to ETS and pests, children with such exposures had an approximately 4-12 point increase in total OSA-18 scores, and the increase among those with exposure to both ETS and pests was about 20 points (approximately a 1.3 standard deviation increase), Gueye-Ndiaye et al. reported.
In models adjusted for age, sex, minority race, and ethnicity, low maternal education was associated with a 7.55 (95% confidence interval, 3.44-11.66; P < .01) increased OSA-18 score. In models adjusted for sociodemographics including maternal education, history of asthma and allergic rhinitis were associated with a 13.63 (95% CI, 9.44-17.82; P < .01) and a 6.95 (95% CI, 2.62-11.29; P < .02) increased OSA-18 score, respectively. The authors noted that prior Canadian studies have shown OSA to be three times as likely in children with mothers reporting less than a high school education than in children with university educated mothers.
Speculating on the drivers of this association, they noted that the poor air quality due to tobacco smoke and allergen exposures to rodents, mold, and cockroaches are known contributors to asthma symptoms. Despite the differing pathogenesis of OSA and asthma, they suggest overlapping risk factors. Irritants and allergens may exacerbate SDB by stimulating immune responses manifested as adenotonsillar hypertrophy and by amplifying nasopharyngeal inflammation, adversely affecting upper airway patency. While ETS was not common in the sample, it was associated strongly with SDB. Gueye-Ndiaye et al. also showed associations between pest exposure, bedroom dust, and SDB symptoms. The findings, they concluded, support the importance of household- and bedroom-environmental conditions and sleep health.
OSA-18 scores were also elevated by about 7-14 points with allergic rhinitis and asthma, respectively. The findings, Gueye-Ndiaye et al. stated, underscore that asthma prevention strategies can be leveraged to address SDB disparities. No amplification of pest exposure effects, however, was found for asthma or allergic rhinitis.
“This is an incredibly important study, one that adds to our understanding of the risk factors that contribute to pediatric sleep health disparities,” said assistant professor of pediatrics Anne C. Coates, MD, Tufts University, Boston. “We have previously understood risk factors for sleep-disordered breathing like adenotonsillar hypertrophy, but this adds other elements like environmental tobacco smoke, pests, and home and neighborhood factors,” she told this news organization. “One of the most important takeaways is that beyond the importance of accurate diagnosis, there is the importance of advocating for our patients to ensure that they have the healthiest homes and neighborhoods. We need to inspire our colleagues to be advocates – for example – for pest mitigation, for antismoking policies, for every policy preventing the factors that contribute to the burden of disease.”
Dr. Coates is coauthor of “Advocacy and Health Equity: The Role of the Pediatric Pulmonologist,” currently in press (Clinics in Chest Medicine), and a member of the CHEST Physician Editorial Board.
The authors noted that a study limitation was that the sample was from one geographic area (Boston). Neither the authors nor Dr. Coates listed any conflicts.
In the first study evaluating pediatric sleep-disordered breathing (SDB) from both indoor environment and neighborhood perspectives, multilevel risk factors were revealed as being associated with SDB-related symptoms. Beyond known associations with environmental tobacco smoke (ETS), .
Although it has been well known that pediatric SDB affects low socioeconomic status (SES) children disproportionately, the roles of multilevel risk factor drivers including individual health, household SES, indoor exposures to environmental tobacco smoke, pests, and neighborhood characteristics have not been well studied, Gueye-Ndiaye et al. wrote in CHEST Pulmonary.
Pediatric SDB, a known risk factor for many health, neurobehavioral, and functional outcomes, includes habitual snoring and obstructive sleep apnea and may contribute to health disparities. Adenotonsillar hypertrophy and obesity are the most commonly recognized risk factors for SDB in generally healthy school-aged children. A role for other risk factors, however, is suggested by the fact that Black children have a fourfold increased risk for obstructive sleep apnea (OSA), compared with White children, unexplained by obesity, and have decreased response to treatment of OSA with adenotonsillectomy, compared with White children. Several studies point in the direction of neighborhood disadvantages as factors in heightened SDB prevalence or severity, Gueye-Ndiaye et al. stated.
The authors performed cross-sectional analyses on data recorded from 303 children (aged 6-12 years) enrolled in the Environmental Assessment of Sleep Youth (EASY) study from 2018 to 2022. Among them, 39% were Hispanic, Latino, Latina, or Spanish origin, 30% were Black or African American, 22% were White, and 11% were other. Maternal education attainment of a high school diploma or less was reported in 27%, and 65% of the sample lived in disadvantaged neighborhoods. Twenty-eight percent of children met criteria for objective SDB (Apnea-Hypopnea Index/Oxygen Desaturation Index ≥ 5/hr). Exposure documentation was informed by caregiver reports, assays of measured settled dust from the child’s bedroom, and neighborhood-level census data from which the Childhood Opportunity Index characterizing neighborhood disadvantage (ND) was derived. The study primary outcome was the SDB-related symptom burden assessed by the OSA-18 questionnaire total score.
Compared with children with no adverse indoor exposures to ETS and pests, children with such exposures had an approximately 4-12 point increase in total OSA-18 scores, and the increase among those with exposure to both ETS and pests was about 20 points (approximately a 1.3 standard deviation increase), Gueye-Ndiaye et al. reported.
In models adjusted for age, sex, minority race, and ethnicity, low maternal education was associated with a 7.55 (95% confidence interval, 3.44-11.66; P < .01) increased OSA-18 score. In models adjusted for sociodemographics including maternal education, history of asthma and allergic rhinitis were associated with a 13.63 (95% CI, 9.44-17.82; P < .01) and a 6.95 (95% CI, 2.62-11.29; P < .02) increased OSA-18 score, respectively. The authors noted that prior Canadian studies have shown OSA to be three times as likely in children with mothers reporting less than a high school education than in children with university educated mothers.
Speculating on the drivers of this association, they noted that the poor air quality due to tobacco smoke and allergen exposures to rodents, mold, and cockroaches are known contributors to asthma symptoms. Despite the differing pathogenesis of OSA and asthma, they suggest overlapping risk factors. Irritants and allergens may exacerbate SDB by stimulating immune responses manifested as adenotonsillar hypertrophy and by amplifying nasopharyngeal inflammation, adversely affecting upper airway patency. While ETS was not common in the sample, it was associated strongly with SDB. Gueye-Ndiaye et al. also showed associations between pest exposure, bedroom dust, and SDB symptoms. The findings, they concluded, support the importance of household- and bedroom-environmental conditions and sleep health.
OSA-18 scores were also elevated by about 7-14 points with allergic rhinitis and asthma, respectively. The findings, Gueye-Ndiaye et al. stated, underscore that asthma prevention strategies can be leveraged to address SDB disparities. No amplification of pest exposure effects, however, was found for asthma or allergic rhinitis.
“This is an incredibly important study, one that adds to our understanding of the risk factors that contribute to pediatric sleep health disparities,” said assistant professor of pediatrics Anne C. Coates, MD, Tufts University, Boston. “We have previously understood risk factors for sleep-disordered breathing like adenotonsillar hypertrophy, but this adds other elements like environmental tobacco smoke, pests, and home and neighborhood factors,” she told this news organization. “One of the most important takeaways is that beyond the importance of accurate diagnosis, there is the importance of advocating for our patients to ensure that they have the healthiest homes and neighborhoods. We need to inspire our colleagues to be advocates – for example – for pest mitigation, for antismoking policies, for every policy preventing the factors that contribute to the burden of disease.”
Dr. Coates is coauthor of “Advocacy and Health Equity: The Role of the Pediatric Pulmonologist,” currently in press (Clinics in Chest Medicine), and a member of the CHEST Physician Editorial Board.
The authors noted that a study limitation was that the sample was from one geographic area (Boston). Neither the authors nor Dr. Coates listed any conflicts.
FROM CHEST PULMONARY
Tapering lupus drugs in stable patients: Large study outlines risks, benefits
The question looms large for patients with stable systemic lupus erythematosus (SLE): to taper or not to taper corticosteroids or immunosuppressive therapy? For patients and the physicians treating them, the evidence points in both directions. Flares are exacerbated by tapering, but simultaneously organ damage is tempered. Where is the balance? What competing factors together inform decision-making?
A recent multinational, observational cohort study conducted by Jiacai Cho, MBBS, of National University Hospital, Singapore, and colleagues, and published in The Lancet Rheumatology concluded that, given the odds of excess flares associated with tapering of corticosteroids and immunosuppressive therapy in patients with stable SLE, drug tapering warrants careful consideration of risks and benefits and is best reserved for those in complete clinical and serological remission with stable disease for at least 6 months. However, in an accompanying editorial, Yann Nguyen, MD, MPH, and Nathalie Costedoat-Chalumeau, MD, PhD, of the National Referral Center for Rare Autoimmune and Systemic Diseases at Cochin Hospital, Paris, and the Center for Research in Epidemiology and Statistics at Paris City University, argued for tipping the scale back from some of those expressed cautions.
In interviews, experts in the field expressed both strong appreciation for the cohort study and, like the editorialists, cognizance of its limitations.
Dr. Cho and colleagues recruited 3,002 adult patients with SLE (92.2% female, median age 39.5 years), from 25 sites across 13 Asia-Pacific countries. They were receiving routine clinical care and had achieved stable disease in at least one of two or more visits. Stable disease was defined by meeting criteria for Lupus Low Disease Activity State (LLDAS; SLE Disease Activity Index 2000 [SLEDAI-2K] score ≤ 4, Physician Global Assessment [PGA] ≤ 1, and prednisolone ≤ 7.5 mg/day), the 2021 DORIS definition of remission (clinical SLEDAI-2K score 0, PGA score < 0.5, and prednisolone dose ≤ 5 mg/day), or DORIS complete remission on therapy (SLEDAI-2K score 0, PGA score < 0.5, and prednisolone dose ≤ 5 mg/day). Any decrease in dose of corticosteroids or immunosuppressive therapy (mycophenolate mofetil, calcineurin inhibitors, azathioprine, leflunomide, or methotrexate) defined tapering. The investigators compared the odds of disease flares (SELENA-SLEDAI Flare Index) at the visit following tapering among those with tapering versus those who had continued the same drug doses.
Higher odds of flare with tapering
Tapering, compared with continuing with the same dose, was clearly associated with higher odds of flare at the next visit (11.4% with continuing vs. 17.0% with tapering; odds ratio, 1.24; 95% confidence interval, 1.10-1.39; P = .0005). Flares among patients who tapered were also slightly more often severe than with continuing the same dose (21.5% of flares vs. 19.7%). The level of remission at the time of tapering also mattered. Of 2,095 continuous tapering attempts, 860 (41.1%) were initiated in LLDAS, 596 (28.4%) in remission, and 639 (30.5%) in complete remission. Tapering when in LLDAS or remission, compared with complete remission, was associated with a higher likelihood of flare by 1 year (LLDAS: OR, 1.37; 95% CI, 1.03-1.81; P = .029; and remission: OR, 1.45; 95% CI, 1.08-1.94; P = .013). Time to first flare followed the same pattern. Also, sustained LLDAS, remission, or complete remission for at least 6 months just before the time of taper was associated with lower odds of flare at next visit and flares in 1 year, and longer time to flare.
Take baseline disease status, hydroxychloroquine’s effect into account
Dr. Nguyen and Dr. Costedoat-Chalumeau underscored several factors that may soften the risk for flares seen with tapering. They pointed to higher baseline doses of prednisone and immunosuppressants (and thus likely more severe disease that is more likely to flare) in the patients with tapering. Also, the SELENA-SLEDAI Flare Index used in the study classifies some clinically insignificant flares as mild to moderate and ignores the benefit of tapering. (It classifies patients as having a severe flare even when starting a new immunosuppressant prescription, such as azathioprine, methotrexate, or both, in an effort to reduce corticosteroid use.) They wrote that the study did not assess the rate of clinically meaningful flares (“essentially renal flares”), nor did it highlight that the “tiny” increase in absolute risk of severe flares (from 2.2% to 3.7%) could be further contextualized by the offset of the smaller, unmeasured rate of clinically significant flares and the “extremely relevant” risk of concomitant damage from prolonged treatment.
Dr. Nguyen and Dr. Costedoat-Chalumeau urged hydroxychloroquine use for all patients unless clearly contraindicated. In their own research, they have detailed hydroxychloroquine benefits in reducing not only flare risk, but also comorbidities, damage, and mortality. In the current study, the prevalence of hydroxychloroquine use in all the patient visits was only 63.3%. “We can assume that if more patients had been treated with hydroxychloroquine, both the number of flares and the difference between the two strategies would have been lower,” they wrote. They cited findings from a study of patients in remission for 2 years or longer in the Toronto Lupus Cohort in which a gradual taper of corticosteroids over 1 year was safe and feasible and resulted in less damage accrual at 24 months than not tapering. Optimizing tapering can minimize flare risk, they concluded.
Tapering SLE medications always involves some chance of flare and has to be considered a calculated risk, Sasha Bernatsky, MD, the James McGill professor of medicine in the division of rheumatology at McGill University, Montreal, said in an interview. “Long-term prednisone is not good for patients. I have heard it called ‘the miracle drug from hell’ – meaning that, yes, it controls disease, but at a cost of long-term complications. So we must be conscientious about tapering prednisone.” She observed that in the short-term, there may not be a huge risk to keeping a patient on an antimalarial and counseling patients to stay on it because their risk of flare is higher if they taper. Rheumatologists usually agree, however, that after 10 years or more, there is a real chance of retinal toxicity. “In our Montreal cohort, the risk of retinal toxicity was 5% after an average of 12.8 years of antimalarial use. My concern is that if a patient develops SLE in their 20s, how do we decide if we should keep them on an antimalarial for the next 60 or 70 years? If we keep them on the drug from age 25 to 45, and they then get retinal toxicity, they would essentially never be able to be on the drug again. So I do try to keep patients on the lowest dose of an antimalarial that is possible.”
Dr. Bernatsky pointed out further, “We think about tapering other immunosuppressants (such as methotrexate or mycophenolate or azathioprine) quite differently than prednisone tapering. We take our time a bit more, since many patients will tolerate being on standard doses of these drugs fairly well. If or when we do consider tapering these drugs, both our intuition and the literature suggests that someone with worse baseline disease activity or severity, who has needed a lot of steroids and multiple combinations of drugs to control disease, has a higher chance of flaring than someone with milder disease. As the editorial points out, lupus physicians (and their patients) need to think carefully about the patient’s risk profile, and be sure to tailor follow-up based on flare risk.”
Frank discussions with patients about the risks of tapering are needed, she said. “On one hand, there is consensus about how some aspects of lupus should be managed (for example, aggressive treatment of severe nephritis), but on the other hand, when it comes to long-term management and especially discussing tapering, we must have good discussions with patients. When a patient asks if they can taper a drug – many just lower or stop their drugs without asking – I am as honest as I can be, but ultimately have to admit any taper could be associated with a flare. It’s helpful to have actual figures to discuss with patients.”
No surprises
“This is an interesting study, which did not produce any surprises,” Dafna D. Gladman, MD, professor of medicine at University of Toronto and senior scientist at the university’s Schroeder Arthritis Institute, said when asked to comment. “We already knew from previous studies that abrupt withdrawal is not a good idea, and that if you taper when a patient is under conditions of remission, the rate of flare is actually lower than the usual rate of flare that occurs in people who continue on these medications. But the major limitation is that they did not specifically look at those who we would taper in clinical practice. In addition, they do not specify that the patients had to be on low-dose glucocorticoids before tapering, and they combined both immunosuppressive and steroids. It is not clear from the study what the excess flare rate was, or whether the flares were mild or severe. Most flares in patients with SLE are mild, consisting of skin and joint manifestations, while only a few patients have flares in kidney or neurologic manifestations.”
Dr. Gladman described her approach to tapering: “We aim for our patients to be taking no more than 5 mg of prednisone and to be in at least clinical remission with a SLEDAI-2K of 0 for at least 2 years before we would taper to glucocorticoids withdrawal. We always withdraw glucocorticoids first and immunosuppressives later, and keep patients on antimalarials the longest, unless there are specific side effects to the immunosuppressive or antimalarials which require their cessation earlier.”
Uncertainty persists
Other SLE experts weighing in confirmed the view that future research should aim to achieve clarity about the relative risks and benefits of tapering SLE drug regimens to maintain disease remission while minimizing potential for organ damage.
“Steroids are our friend and our enemy,” Joan T. Merrill, MD, professor of medicine at the University of Oklahoma Health Sciences Center, Oklahoma City, said in an interview. “If a person with lupus is in a lot of trouble, corticosteroids are almost universally a good option to get them out. But for too many decades, for too many patients, despite all the improvements we have made in better understanding the disease and developing some promising new treatments, we have yet to shed the inexorable toxicity in multiple organs of steroid dependence.” She continued, “Corticosteroids, even at low dose, may have broad-spectrum effects. But, in fact, so do many of the more ‘targeted’ agents. If all patients were lined up at the beginning of a study while being given azathioprine or a calcineurin inhibitor or belimumab at a stable, tolerable dose, you might see the same data if you tapered that agent down. What we really need is improved individualized guidance about when and how fast to remove immune modulators from stable patients with lupus without disturbing the balance that had been achieved in such a quiescent patient.”
That enduring uncertainty was echoed by Daniel J. Wallace, MD, professor of medicine at Cedars-Sinai Medical Center, Los Angeles: “The take-home message from this interesting paper,” he commented, “is that current lupus biomarkers are not adequate. They do not guide the practitioner well enough, so that all too often medication regimens are tapered even though the risks are not really well known. Also, there is evidence in the literature that fibrosis and ‘damage’ progress even if acute phase reactants such as sedimentation rate, [C-reactive protein], complement 3 and 4, and anti-dsDNA are normal. We don’t have a good metric to detect them.”
Dr. Cho and colleagues’ study was funded by AstraZeneca, Bristol-Myers Squibb, Eli Lilly, Janssen, Merck Serono, GlaxoSmithKline, and UCB. Dr. Gladman disclosed consulting and/or research support from AbbVie, Amgen, Bristol-Myers Squibb, Eli Lilly, Janssen, Novartis, Pfizer, and UCB.
The question looms large for patients with stable systemic lupus erythematosus (SLE): to taper or not to taper corticosteroids or immunosuppressive therapy? For patients and the physicians treating them, the evidence points in both directions. Flares are exacerbated by tapering, but simultaneously organ damage is tempered. Where is the balance? What competing factors together inform decision-making?
A recent multinational, observational cohort study conducted by Jiacai Cho, MBBS, of National University Hospital, Singapore, and colleagues, and published in The Lancet Rheumatology concluded that, given the odds of excess flares associated with tapering of corticosteroids and immunosuppressive therapy in patients with stable SLE, drug tapering warrants careful consideration of risks and benefits and is best reserved for those in complete clinical and serological remission with stable disease for at least 6 months. However, in an accompanying editorial, Yann Nguyen, MD, MPH, and Nathalie Costedoat-Chalumeau, MD, PhD, of the National Referral Center for Rare Autoimmune and Systemic Diseases at Cochin Hospital, Paris, and the Center for Research in Epidemiology and Statistics at Paris City University, argued for tipping the scale back from some of those expressed cautions.
In interviews, experts in the field expressed both strong appreciation for the cohort study and, like the editorialists, cognizance of its limitations.
Dr. Cho and colleagues recruited 3,002 adult patients with SLE (92.2% female, median age 39.5 years), from 25 sites across 13 Asia-Pacific countries. They were receiving routine clinical care and had achieved stable disease in at least one of two or more visits. Stable disease was defined by meeting criteria for Lupus Low Disease Activity State (LLDAS; SLE Disease Activity Index 2000 [SLEDAI-2K] score ≤ 4, Physician Global Assessment [PGA] ≤ 1, and prednisolone ≤ 7.5 mg/day), the 2021 DORIS definition of remission (clinical SLEDAI-2K score 0, PGA score < 0.5, and prednisolone dose ≤ 5 mg/day), or DORIS complete remission on therapy (SLEDAI-2K score 0, PGA score < 0.5, and prednisolone dose ≤ 5 mg/day). Any decrease in dose of corticosteroids or immunosuppressive therapy (mycophenolate mofetil, calcineurin inhibitors, azathioprine, leflunomide, or methotrexate) defined tapering. The investigators compared the odds of disease flares (SELENA-SLEDAI Flare Index) at the visit following tapering among those with tapering versus those who had continued the same drug doses.
Higher odds of flare with tapering
Tapering, compared with continuing with the same dose, was clearly associated with higher odds of flare at the next visit (11.4% with continuing vs. 17.0% with tapering; odds ratio, 1.24; 95% confidence interval, 1.10-1.39; P = .0005). Flares among patients who tapered were also slightly more often severe than with continuing the same dose (21.5% of flares vs. 19.7%). The level of remission at the time of tapering also mattered. Of 2,095 continuous tapering attempts, 860 (41.1%) were initiated in LLDAS, 596 (28.4%) in remission, and 639 (30.5%) in complete remission. Tapering when in LLDAS or remission, compared with complete remission, was associated with a higher likelihood of flare by 1 year (LLDAS: OR, 1.37; 95% CI, 1.03-1.81; P = .029; and remission: OR, 1.45; 95% CI, 1.08-1.94; P = .013). Time to first flare followed the same pattern. Also, sustained LLDAS, remission, or complete remission for at least 6 months just before the time of taper was associated with lower odds of flare at next visit and flares in 1 year, and longer time to flare.
Take baseline disease status, hydroxychloroquine’s effect into account
Dr. Nguyen and Dr. Costedoat-Chalumeau underscored several factors that may soften the risk for flares seen with tapering. They pointed to higher baseline doses of prednisone and immunosuppressants (and thus likely more severe disease that is more likely to flare) in the patients with tapering. Also, the SELENA-SLEDAI Flare Index used in the study classifies some clinically insignificant flares as mild to moderate and ignores the benefit of tapering. (It classifies patients as having a severe flare even when starting a new immunosuppressant prescription, such as azathioprine, methotrexate, or both, in an effort to reduce corticosteroid use.) They wrote that the study did not assess the rate of clinically meaningful flares (“essentially renal flares”), nor did it highlight that the “tiny” increase in absolute risk of severe flares (from 2.2% to 3.7%) could be further contextualized by the offset of the smaller, unmeasured rate of clinically significant flares and the “extremely relevant” risk of concomitant damage from prolonged treatment.
Dr. Nguyen and Dr. Costedoat-Chalumeau urged hydroxychloroquine use for all patients unless clearly contraindicated. In their own research, they have detailed hydroxychloroquine benefits in reducing not only flare risk, but also comorbidities, damage, and mortality. In the current study, the prevalence of hydroxychloroquine use in all the patient visits was only 63.3%. “We can assume that if more patients had been treated with hydroxychloroquine, both the number of flares and the difference between the two strategies would have been lower,” they wrote. They cited findings from a study of patients in remission for 2 years or longer in the Toronto Lupus Cohort in which a gradual taper of corticosteroids over 1 year was safe and feasible and resulted in less damage accrual at 24 months than not tapering. Optimizing tapering can minimize flare risk, they concluded.
Tapering SLE medications always involves some chance of flare and has to be considered a calculated risk, Sasha Bernatsky, MD, the James McGill professor of medicine in the division of rheumatology at McGill University, Montreal, said in an interview. “Long-term prednisone is not good for patients. I have heard it called ‘the miracle drug from hell’ – meaning that, yes, it controls disease, but at a cost of long-term complications. So we must be conscientious about tapering prednisone.” She observed that in the short-term, there may not be a huge risk to keeping a patient on an antimalarial and counseling patients to stay on it because their risk of flare is higher if they taper. Rheumatologists usually agree, however, that after 10 years or more, there is a real chance of retinal toxicity. “In our Montreal cohort, the risk of retinal toxicity was 5% after an average of 12.8 years of antimalarial use. My concern is that if a patient develops SLE in their 20s, how do we decide if we should keep them on an antimalarial for the next 60 or 70 years? If we keep them on the drug from age 25 to 45, and they then get retinal toxicity, they would essentially never be able to be on the drug again. So I do try to keep patients on the lowest dose of an antimalarial that is possible.”
Dr. Bernatsky pointed out further, “We think about tapering other immunosuppressants (such as methotrexate or mycophenolate or azathioprine) quite differently than prednisone tapering. We take our time a bit more, since many patients will tolerate being on standard doses of these drugs fairly well. If or when we do consider tapering these drugs, both our intuition and the literature suggests that someone with worse baseline disease activity or severity, who has needed a lot of steroids and multiple combinations of drugs to control disease, has a higher chance of flaring than someone with milder disease. As the editorial points out, lupus physicians (and their patients) need to think carefully about the patient’s risk profile, and be sure to tailor follow-up based on flare risk.”
Frank discussions with patients about the risks of tapering are needed, she said. “On one hand, there is consensus about how some aspects of lupus should be managed (for example, aggressive treatment of severe nephritis), but on the other hand, when it comes to long-term management and especially discussing tapering, we must have good discussions with patients. When a patient asks if they can taper a drug – many just lower or stop their drugs without asking – I am as honest as I can be, but ultimately have to admit any taper could be associated with a flare. It’s helpful to have actual figures to discuss with patients.”
No surprises
“This is an interesting study, which did not produce any surprises,” Dafna D. Gladman, MD, professor of medicine at University of Toronto and senior scientist at the university’s Schroeder Arthritis Institute, said when asked to comment. “We already knew from previous studies that abrupt withdrawal is not a good idea, and that if you taper when a patient is under conditions of remission, the rate of flare is actually lower than the usual rate of flare that occurs in people who continue on these medications. But the major limitation is that they did not specifically look at those who we would taper in clinical practice. In addition, they do not specify that the patients had to be on low-dose glucocorticoids before tapering, and they combined both immunosuppressive and steroids. It is not clear from the study what the excess flare rate was, or whether the flares were mild or severe. Most flares in patients with SLE are mild, consisting of skin and joint manifestations, while only a few patients have flares in kidney or neurologic manifestations.”
Dr. Gladman described her approach to tapering: “We aim for our patients to be taking no more than 5 mg of prednisone and to be in at least clinical remission with a SLEDAI-2K of 0 for at least 2 years before we would taper to glucocorticoids withdrawal. We always withdraw glucocorticoids first and immunosuppressives later, and keep patients on antimalarials the longest, unless there are specific side effects to the immunosuppressive or antimalarials which require their cessation earlier.”
Uncertainty persists
Other SLE experts weighing in confirmed the view that future research should aim to achieve clarity about the relative risks and benefits of tapering SLE drug regimens to maintain disease remission while minimizing potential for organ damage.
“Steroids are our friend and our enemy,” Joan T. Merrill, MD, professor of medicine at the University of Oklahoma Health Sciences Center, Oklahoma City, said in an interview. “If a person with lupus is in a lot of trouble, corticosteroids are almost universally a good option to get them out. But for too many decades, for too many patients, despite all the improvements we have made in better understanding the disease and developing some promising new treatments, we have yet to shed the inexorable toxicity in multiple organs of steroid dependence.” She continued, “Corticosteroids, even at low dose, may have broad-spectrum effects. But, in fact, so do many of the more ‘targeted’ agents. If all patients were lined up at the beginning of a study while being given azathioprine or a calcineurin inhibitor or belimumab at a stable, tolerable dose, you might see the same data if you tapered that agent down. What we really need is improved individualized guidance about when and how fast to remove immune modulators from stable patients with lupus without disturbing the balance that had been achieved in such a quiescent patient.”
That enduring uncertainty was echoed by Daniel J. Wallace, MD, professor of medicine at Cedars-Sinai Medical Center, Los Angeles: “The take-home message from this interesting paper,” he commented, “is that current lupus biomarkers are not adequate. They do not guide the practitioner well enough, so that all too often medication regimens are tapered even though the risks are not really well known. Also, there is evidence in the literature that fibrosis and ‘damage’ progress even if acute phase reactants such as sedimentation rate, [C-reactive protein], complement 3 and 4, and anti-dsDNA are normal. We don’t have a good metric to detect them.”
Dr. Cho and colleagues’ study was funded by AstraZeneca, Bristol-Myers Squibb, Eli Lilly, Janssen, Merck Serono, GlaxoSmithKline, and UCB. Dr. Gladman disclosed consulting and/or research support from AbbVie, Amgen, Bristol-Myers Squibb, Eli Lilly, Janssen, Novartis, Pfizer, and UCB.
The question looms large for patients with stable systemic lupus erythematosus (SLE): to taper or not to taper corticosteroids or immunosuppressive therapy? For patients and the physicians treating them, the evidence points in both directions. Flares are exacerbated by tapering, but simultaneously organ damage is tempered. Where is the balance? What competing factors together inform decision-making?
A recent multinational, observational cohort study conducted by Jiacai Cho, MBBS, of National University Hospital, Singapore, and colleagues, and published in The Lancet Rheumatology concluded that, given the odds of excess flares associated with tapering of corticosteroids and immunosuppressive therapy in patients with stable SLE, drug tapering warrants careful consideration of risks and benefits and is best reserved for those in complete clinical and serological remission with stable disease for at least 6 months. However, in an accompanying editorial, Yann Nguyen, MD, MPH, and Nathalie Costedoat-Chalumeau, MD, PhD, of the National Referral Center for Rare Autoimmune and Systemic Diseases at Cochin Hospital, Paris, and the Center for Research in Epidemiology and Statistics at Paris City University, argued for tipping the scale back from some of those expressed cautions.
In interviews, experts in the field expressed both strong appreciation for the cohort study and, like the editorialists, cognizance of its limitations.
Dr. Cho and colleagues recruited 3,002 adult patients with SLE (92.2% female, median age 39.5 years), from 25 sites across 13 Asia-Pacific countries. They were receiving routine clinical care and had achieved stable disease in at least one of two or more visits. Stable disease was defined by meeting criteria for Lupus Low Disease Activity State (LLDAS; SLE Disease Activity Index 2000 [SLEDAI-2K] score ≤ 4, Physician Global Assessment [PGA] ≤ 1, and prednisolone ≤ 7.5 mg/day), the 2021 DORIS definition of remission (clinical SLEDAI-2K score 0, PGA score < 0.5, and prednisolone dose ≤ 5 mg/day), or DORIS complete remission on therapy (SLEDAI-2K score 0, PGA score < 0.5, and prednisolone dose ≤ 5 mg/day). Any decrease in dose of corticosteroids or immunosuppressive therapy (mycophenolate mofetil, calcineurin inhibitors, azathioprine, leflunomide, or methotrexate) defined tapering. The investigators compared the odds of disease flares (SELENA-SLEDAI Flare Index) at the visit following tapering among those with tapering versus those who had continued the same drug doses.
Higher odds of flare with tapering
Tapering, compared with continuing with the same dose, was clearly associated with higher odds of flare at the next visit (11.4% with continuing vs. 17.0% with tapering; odds ratio, 1.24; 95% confidence interval, 1.10-1.39; P = .0005). Flares among patients who tapered were also slightly more often severe than with continuing the same dose (21.5% of flares vs. 19.7%). The level of remission at the time of tapering also mattered. Of 2,095 continuous tapering attempts, 860 (41.1%) were initiated in LLDAS, 596 (28.4%) in remission, and 639 (30.5%) in complete remission. Tapering when in LLDAS or remission, compared with complete remission, was associated with a higher likelihood of flare by 1 year (LLDAS: OR, 1.37; 95% CI, 1.03-1.81; P = .029; and remission: OR, 1.45; 95% CI, 1.08-1.94; P = .013). Time to first flare followed the same pattern. Also, sustained LLDAS, remission, or complete remission for at least 6 months just before the time of taper was associated with lower odds of flare at next visit and flares in 1 year, and longer time to flare.
Take baseline disease status, hydroxychloroquine’s effect into account
Dr. Nguyen and Dr. Costedoat-Chalumeau underscored several factors that may soften the risk for flares seen with tapering. They pointed to higher baseline doses of prednisone and immunosuppressants (and thus likely more severe disease that is more likely to flare) in the patients with tapering. Also, the SELENA-SLEDAI Flare Index used in the study classifies some clinically insignificant flares as mild to moderate and ignores the benefit of tapering. (It classifies patients as having a severe flare even when starting a new immunosuppressant prescription, such as azathioprine, methotrexate, or both, in an effort to reduce corticosteroid use.) They wrote that the study did not assess the rate of clinically meaningful flares (“essentially renal flares”), nor did it highlight that the “tiny” increase in absolute risk of severe flares (from 2.2% to 3.7%) could be further contextualized by the offset of the smaller, unmeasured rate of clinically significant flares and the “extremely relevant” risk of concomitant damage from prolonged treatment.
Dr. Nguyen and Dr. Costedoat-Chalumeau urged hydroxychloroquine use for all patients unless clearly contraindicated. In their own research, they have detailed hydroxychloroquine benefits in reducing not only flare risk, but also comorbidities, damage, and mortality. In the current study, the prevalence of hydroxychloroquine use in all the patient visits was only 63.3%. “We can assume that if more patients had been treated with hydroxychloroquine, both the number of flares and the difference between the two strategies would have been lower,” they wrote. They cited findings from a study of patients in remission for 2 years or longer in the Toronto Lupus Cohort in which a gradual taper of corticosteroids over 1 year was safe and feasible and resulted in less damage accrual at 24 months than not tapering. Optimizing tapering can minimize flare risk, they concluded.
Tapering SLE medications always involves some chance of flare and has to be considered a calculated risk, Sasha Bernatsky, MD, the James McGill professor of medicine in the division of rheumatology at McGill University, Montreal, said in an interview. “Long-term prednisone is not good for patients. I have heard it called ‘the miracle drug from hell’ – meaning that, yes, it controls disease, but at a cost of long-term complications. So we must be conscientious about tapering prednisone.” She observed that in the short-term, there may not be a huge risk to keeping a patient on an antimalarial and counseling patients to stay on it because their risk of flare is higher if they taper. Rheumatologists usually agree, however, that after 10 years or more, there is a real chance of retinal toxicity. “In our Montreal cohort, the risk of retinal toxicity was 5% after an average of 12.8 years of antimalarial use. My concern is that if a patient develops SLE in their 20s, how do we decide if we should keep them on an antimalarial for the next 60 or 70 years? If we keep them on the drug from age 25 to 45, and they then get retinal toxicity, they would essentially never be able to be on the drug again. So I do try to keep patients on the lowest dose of an antimalarial that is possible.”
Dr. Bernatsky pointed out further, “We think about tapering other immunosuppressants (such as methotrexate or mycophenolate or azathioprine) quite differently than prednisone tapering. We take our time a bit more, since many patients will tolerate being on standard doses of these drugs fairly well. If or when we do consider tapering these drugs, both our intuition and the literature suggests that someone with worse baseline disease activity or severity, who has needed a lot of steroids and multiple combinations of drugs to control disease, has a higher chance of flaring than someone with milder disease. As the editorial points out, lupus physicians (and their patients) need to think carefully about the patient’s risk profile, and be sure to tailor follow-up based on flare risk.”
Frank discussions with patients about the risks of tapering are needed, she said. “On one hand, there is consensus about how some aspects of lupus should be managed (for example, aggressive treatment of severe nephritis), but on the other hand, when it comes to long-term management and especially discussing tapering, we must have good discussions with patients. When a patient asks if they can taper a drug – many just lower or stop their drugs without asking – I am as honest as I can be, but ultimately have to admit any taper could be associated with a flare. It’s helpful to have actual figures to discuss with patients.”
No surprises
“This is an interesting study, which did not produce any surprises,” Dafna D. Gladman, MD, professor of medicine at University of Toronto and senior scientist at the university’s Schroeder Arthritis Institute, said when asked to comment. “We already knew from previous studies that abrupt withdrawal is not a good idea, and that if you taper when a patient is under conditions of remission, the rate of flare is actually lower than the usual rate of flare that occurs in people who continue on these medications. But the major limitation is that they did not specifically look at those who we would taper in clinical practice. In addition, they do not specify that the patients had to be on low-dose glucocorticoids before tapering, and they combined both immunosuppressive and steroids. It is not clear from the study what the excess flare rate was, or whether the flares were mild or severe. Most flares in patients with SLE are mild, consisting of skin and joint manifestations, while only a few patients have flares in kidney or neurologic manifestations.”
Dr. Gladman described her approach to tapering: “We aim for our patients to be taking no more than 5 mg of prednisone and to be in at least clinical remission with a SLEDAI-2K of 0 for at least 2 years before we would taper to glucocorticoids withdrawal. We always withdraw glucocorticoids first and immunosuppressives later, and keep patients on antimalarials the longest, unless there are specific side effects to the immunosuppressive or antimalarials which require their cessation earlier.”
Uncertainty persists
Other SLE experts weighing in confirmed the view that future research should aim to achieve clarity about the relative risks and benefits of tapering SLE drug regimens to maintain disease remission while minimizing potential for organ damage.
“Steroids are our friend and our enemy,” Joan T. Merrill, MD, professor of medicine at the University of Oklahoma Health Sciences Center, Oklahoma City, said in an interview. “If a person with lupus is in a lot of trouble, corticosteroids are almost universally a good option to get them out. But for too many decades, for too many patients, despite all the improvements we have made in better understanding the disease and developing some promising new treatments, we have yet to shed the inexorable toxicity in multiple organs of steroid dependence.” She continued, “Corticosteroids, even at low dose, may have broad-spectrum effects. But, in fact, so do many of the more ‘targeted’ agents. If all patients were lined up at the beginning of a study while being given azathioprine or a calcineurin inhibitor or belimumab at a stable, tolerable dose, you might see the same data if you tapered that agent down. What we really need is improved individualized guidance about when and how fast to remove immune modulators from stable patients with lupus without disturbing the balance that had been achieved in such a quiescent patient.”
That enduring uncertainty was echoed by Daniel J. Wallace, MD, professor of medicine at Cedars-Sinai Medical Center, Los Angeles: “The take-home message from this interesting paper,” he commented, “is that current lupus biomarkers are not adequate. They do not guide the practitioner well enough, so that all too often medication regimens are tapered even though the risks are not really well known. Also, there is evidence in the literature that fibrosis and ‘damage’ progress even if acute phase reactants such as sedimentation rate, [C-reactive protein], complement 3 and 4, and anti-dsDNA are normal. We don’t have a good metric to detect them.”
Dr. Cho and colleagues’ study was funded by AstraZeneca, Bristol-Myers Squibb, Eli Lilly, Janssen, Merck Serono, GlaxoSmithKline, and UCB. Dr. Gladman disclosed consulting and/or research support from AbbVie, Amgen, Bristol-Myers Squibb, Eli Lilly, Janssen, Novartis, Pfizer, and UCB.
FROM THE LANCET RHEUMATOLOGY
First guidelines developed for childhood eosinophilic GI disorders beyond eosinophilic esophagitis
The limited scope and depth of existing literature on childhood eosinophilic gastrointestinal disorders (EGIDs) beyond eosinophilic esophagitis (EoE) spurred an international group of researchers and clinicians to develop the first clinical practice guidelines for diagnosing and treating these rare conditions.
They were developed jointly by the European Society for Paediatric Gastroenterology, Hepatology and Nutrition and the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition.
Non-EoE EGIDs are rare chronic inflammatory disorders of the gastrointestinal tract, estimated at less than 200,000 cases annually in the United States, with unknown long-term consequences, Glenn Furuta, MD, professor of pediatrics at the University of Colorado at Denver and section head of gastroenterology at Children’s Hospital Colorado, both in Aurora, said in an interview
“There are many unmet needs. Research has been limited and has not progressed at the pace we want it to,” added Dr. Furuta, who is corresponding author of the guidelines.
The guidelines were published online in the Journal of Pediatric Gastroenterology & Nutrition, by lead author Alexandra Papadopoulou, MD, division of gastroenterology and hepatology, first department of pediatrics, University of Athens, and Children’s Hospital Agia Sofia, also in Athens, and colleagues.
With these, we provide guidance for clinicians to better understand the conditions and also how to diagnose and initiate care for patients with these rare diseases, said Dr. Furuta.
Difficult-to-diagnose conditions
Guideline development involved a working group of 26 pediatric gastroenterologists, adult gastroenterologists, allergists/immunologists, and pathologists from 16 countries across five continents. The consensus document includes 34 statements based on available evidence and 41 recommendations based on expert opinion and best clinical practices. In cases where the supporting evidence was weak but agreement was strong, the authors issued conditional recommendations.
The guidelines subdivide the non-EoE EGIDs according to inflammation location: eosinophilic gastritis, eosinophilic duodenitis (EoD), eosinophilic colitis, and eosinophilic enteritis. The latter can be further subdivided into EoD, eosinophilic jejunitis, and eosinophilic ileitis.
Non-EoE EGIDs are hard to diagnose because symptoms are relatively nonspecific and may include abdominal pain, vomiting, diarrhea, and bloody stools, all of which could have any number of underlying causes, Dr. Furuta said.
If you are treating a patient who is not getting better with such symptoms as persisting infections, acid-related problems, significant bleeding leading to anemia, intestinal perforation or obstruction, or low serum protein leading to swelling, then you should think that something else is going on that requires more of an evaluation, Dr. Furuta noted.
Patients with personal or family histories of eosinophilic or allergic disease should raise greater suspicion, Dr. Furuta said. “The next step requires an endoscopy and biopsy.”
Awareness of non-EoE EGIDs has been higher among pediatric gastroenterologists than among those treating adult disease because pediatric gastroenterologists have always obtained biopsies of the intestinal tract, Dr. Furuta noted.
The guidelines recommend that diagnosis of non-EoE EGIDs in children and adolescents must include signs or symptoms of gastrointestinal dysfunction, dense eosinophilic infiltrates found in mucosal or full-thickness biopsies above organ-specific threshold values included in the document, and absence of other diseases associated with GI mucosal eosinophilic inflammation.
Individualized treatment
The authors noted that the strength of recommendations varies with the often-modest availability of randomized controlled trial data on treatment efficacy.
For example, they recommended that systemic steroids be considered to induce remission but only conditionally recommend topical steroids. They conditionally recommend consideration of empiric elimination diets and conditionally recommend against using food allergy testing to guide diet.
The choice of treatment should be individualized on the basis of the affected GI segment, severity of the disease, patient characteristics, and family resources and capabilities, the authors wrote.
“We’ve provided guidance on how to care for patients based on the consensus of experts who have the necessary experience and knowledge base,” Dr. Furuta said. “Our ability to say: ‘Here are the established treatments,’ is lacking, though. We need research studies to verify that our recommended approaches are indeed correct.”
The authors conditionally recommended that treatment goals include achieving symptom resolution, improving gross endoscopic and histologic abnormalities, promoting normal childhood growth and development, and preventing disease complications.
No pediatric study has determined the natural history of non-EoE EGIDs, and no study of maintenance therapy has been conducted, the authors noted.
For this reason, they conditionally recommended that the clinical decision to continue therapy should be discussed with patients and their parents/caregivers, and those discussions include the benefits and risk of long-term treatment, its cost, and its impact on health-related quality of life.
A starting point for patient management
In a comment, Vincent Mukkada, MD, professor of pediatrics at the University of Cincinnati and an attending physician in gastroenterology, hepatology, and nutrition at Cincinnati Children’s Hospital and Medical Center, observed that, though improved awareness among pediatric gastroenterologists may account for some of the increase in GI eosinophil disease, the incidence is also likely growing.
“We’re looking for them much more,” said Dr. Mukkada.
“But I also think they’re increasing, just like all other atopic diseases. We’re not sure why,” he added.
“The hope is that these guidelines will allow nonsubspecialized gastroenterologists and allergists feel comfortable to at least start on the journey of managing these patients. And, for pediatricians who learn that their patient has received a non-EoE EGID diagnosis, they can go to the summary figures in this one document and very quickly get an overview of the disease and its course,” Dr. Mukkada said.
Guideline development was funded by the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition and the European Society for Pediatric Gastroenterology, Hepatology and Nutrition. The authors and Dr. Mukkada reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
The limited scope and depth of existing literature on childhood eosinophilic gastrointestinal disorders (EGIDs) beyond eosinophilic esophagitis (EoE) spurred an international group of researchers and clinicians to develop the first clinical practice guidelines for diagnosing and treating these rare conditions.
They were developed jointly by the European Society for Paediatric Gastroenterology, Hepatology and Nutrition and the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition.
Non-EoE EGIDs are rare chronic inflammatory disorders of the gastrointestinal tract, estimated at less than 200,000 cases annually in the United States, with unknown long-term consequences, Glenn Furuta, MD, professor of pediatrics at the University of Colorado at Denver and section head of gastroenterology at Children’s Hospital Colorado, both in Aurora, said in an interview
“There are many unmet needs. Research has been limited and has not progressed at the pace we want it to,” added Dr. Furuta, who is corresponding author of the guidelines.
The guidelines were published online in the Journal of Pediatric Gastroenterology & Nutrition, by lead author Alexandra Papadopoulou, MD, division of gastroenterology and hepatology, first department of pediatrics, University of Athens, and Children’s Hospital Agia Sofia, also in Athens, and colleagues.
With these, we provide guidance for clinicians to better understand the conditions and also how to diagnose and initiate care for patients with these rare diseases, said Dr. Furuta.
Difficult-to-diagnose conditions
Guideline development involved a working group of 26 pediatric gastroenterologists, adult gastroenterologists, allergists/immunologists, and pathologists from 16 countries across five continents. The consensus document includes 34 statements based on available evidence and 41 recommendations based on expert opinion and best clinical practices. In cases where the supporting evidence was weak but agreement was strong, the authors issued conditional recommendations.
The guidelines subdivide the non-EoE EGIDs according to inflammation location: eosinophilic gastritis, eosinophilic duodenitis (EoD), eosinophilic colitis, and eosinophilic enteritis. The latter can be further subdivided into EoD, eosinophilic jejunitis, and eosinophilic ileitis.
Non-EoE EGIDs are hard to diagnose because symptoms are relatively nonspecific and may include abdominal pain, vomiting, diarrhea, and bloody stools, all of which could have any number of underlying causes, Dr. Furuta said.
If you are treating a patient who is not getting better with such symptoms as persisting infections, acid-related problems, significant bleeding leading to anemia, intestinal perforation or obstruction, or low serum protein leading to swelling, then you should think that something else is going on that requires more of an evaluation, Dr. Furuta noted.
Patients with personal or family histories of eosinophilic or allergic disease should raise greater suspicion, Dr. Furuta said. “The next step requires an endoscopy and biopsy.”
Awareness of non-EoE EGIDs has been higher among pediatric gastroenterologists than among those treating adult disease because pediatric gastroenterologists have always obtained biopsies of the intestinal tract, Dr. Furuta noted.
The guidelines recommend that diagnosis of non-EoE EGIDs in children and adolescents must include signs or symptoms of gastrointestinal dysfunction, dense eosinophilic infiltrates found in mucosal or full-thickness biopsies above organ-specific threshold values included in the document, and absence of other diseases associated with GI mucosal eosinophilic inflammation.
Individualized treatment
The authors noted that the strength of recommendations varies with the often-modest availability of randomized controlled trial data on treatment efficacy.
For example, they recommended that systemic steroids be considered to induce remission but only conditionally recommend topical steroids. They conditionally recommend consideration of empiric elimination diets and conditionally recommend against using food allergy testing to guide diet.
The choice of treatment should be individualized on the basis of the affected GI segment, severity of the disease, patient characteristics, and family resources and capabilities, the authors wrote.
“We’ve provided guidance on how to care for patients based on the consensus of experts who have the necessary experience and knowledge base,” Dr. Furuta said. “Our ability to say: ‘Here are the established treatments,’ is lacking, though. We need research studies to verify that our recommended approaches are indeed correct.”
The authors conditionally recommended that treatment goals include achieving symptom resolution, improving gross endoscopic and histologic abnormalities, promoting normal childhood growth and development, and preventing disease complications.
No pediatric study has determined the natural history of non-EoE EGIDs, and no study of maintenance therapy has been conducted, the authors noted.
For this reason, they conditionally recommended that the clinical decision to continue therapy should be discussed with patients and their parents/caregivers, and those discussions include the benefits and risk of long-term treatment, its cost, and its impact on health-related quality of life.
A starting point for patient management
In a comment, Vincent Mukkada, MD, professor of pediatrics at the University of Cincinnati and an attending physician in gastroenterology, hepatology, and nutrition at Cincinnati Children’s Hospital and Medical Center, observed that, though improved awareness among pediatric gastroenterologists may account for some of the increase in GI eosinophil disease, the incidence is also likely growing.
“We’re looking for them much more,” said Dr. Mukkada.
“But I also think they’re increasing, just like all other atopic diseases. We’re not sure why,” he added.
“The hope is that these guidelines will allow nonsubspecialized gastroenterologists and allergists feel comfortable to at least start on the journey of managing these patients. And, for pediatricians who learn that their patient has received a non-EoE EGID diagnosis, they can go to the summary figures in this one document and very quickly get an overview of the disease and its course,” Dr. Mukkada said.
Guideline development was funded by the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition and the European Society for Pediatric Gastroenterology, Hepatology and Nutrition. The authors and Dr. Mukkada reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
The limited scope and depth of existing literature on childhood eosinophilic gastrointestinal disorders (EGIDs) beyond eosinophilic esophagitis (EoE) spurred an international group of researchers and clinicians to develop the first clinical practice guidelines for diagnosing and treating these rare conditions.
They were developed jointly by the European Society for Paediatric Gastroenterology, Hepatology and Nutrition and the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition.
Non-EoE EGIDs are rare chronic inflammatory disorders of the gastrointestinal tract, estimated at less than 200,000 cases annually in the United States, with unknown long-term consequences, Glenn Furuta, MD, professor of pediatrics at the University of Colorado at Denver and section head of gastroenterology at Children’s Hospital Colorado, both in Aurora, said in an interview
“There are many unmet needs. Research has been limited and has not progressed at the pace we want it to,” added Dr. Furuta, who is corresponding author of the guidelines.
The guidelines were published online in the Journal of Pediatric Gastroenterology & Nutrition, by lead author Alexandra Papadopoulou, MD, division of gastroenterology and hepatology, first department of pediatrics, University of Athens, and Children’s Hospital Agia Sofia, also in Athens, and colleagues.
With these, we provide guidance for clinicians to better understand the conditions and also how to diagnose and initiate care for patients with these rare diseases, said Dr. Furuta.
Difficult-to-diagnose conditions
Guideline development involved a working group of 26 pediatric gastroenterologists, adult gastroenterologists, allergists/immunologists, and pathologists from 16 countries across five continents. The consensus document includes 34 statements based on available evidence and 41 recommendations based on expert opinion and best clinical practices. In cases where the supporting evidence was weak but agreement was strong, the authors issued conditional recommendations.
The guidelines subdivide the non-EoE EGIDs according to inflammation location: eosinophilic gastritis, eosinophilic duodenitis (EoD), eosinophilic colitis, and eosinophilic enteritis. The latter can be further subdivided into EoD, eosinophilic jejunitis, and eosinophilic ileitis.
Non-EoE EGIDs are hard to diagnose because symptoms are relatively nonspecific and may include abdominal pain, vomiting, diarrhea, and bloody stools, all of which could have any number of underlying causes, Dr. Furuta said.
If you are treating a patient who is not getting better with such symptoms as persisting infections, acid-related problems, significant bleeding leading to anemia, intestinal perforation or obstruction, or low serum protein leading to swelling, then you should think that something else is going on that requires more of an evaluation, Dr. Furuta noted.
Patients with personal or family histories of eosinophilic or allergic disease should raise greater suspicion, Dr. Furuta said. “The next step requires an endoscopy and biopsy.”
Awareness of non-EoE EGIDs has been higher among pediatric gastroenterologists than among those treating adult disease because pediatric gastroenterologists have always obtained biopsies of the intestinal tract, Dr. Furuta noted.
The guidelines recommend that diagnosis of non-EoE EGIDs in children and adolescents must include signs or symptoms of gastrointestinal dysfunction, dense eosinophilic infiltrates found in mucosal or full-thickness biopsies above organ-specific threshold values included in the document, and absence of other diseases associated with GI mucosal eosinophilic inflammation.
Individualized treatment
The authors noted that the strength of recommendations varies with the often-modest availability of randomized controlled trial data on treatment efficacy.
For example, they recommended that systemic steroids be considered to induce remission but only conditionally recommend topical steroids. They conditionally recommend consideration of empiric elimination diets and conditionally recommend against using food allergy testing to guide diet.
The choice of treatment should be individualized on the basis of the affected GI segment, severity of the disease, patient characteristics, and family resources and capabilities, the authors wrote.
“We’ve provided guidance on how to care for patients based on the consensus of experts who have the necessary experience and knowledge base,” Dr. Furuta said. “Our ability to say: ‘Here are the established treatments,’ is lacking, though. We need research studies to verify that our recommended approaches are indeed correct.”
The authors conditionally recommended that treatment goals include achieving symptom resolution, improving gross endoscopic and histologic abnormalities, promoting normal childhood growth and development, and preventing disease complications.
No pediatric study has determined the natural history of non-EoE EGIDs, and no study of maintenance therapy has been conducted, the authors noted.
For this reason, they conditionally recommended that the clinical decision to continue therapy should be discussed with patients and their parents/caregivers, and those discussions include the benefits and risk of long-term treatment, its cost, and its impact on health-related quality of life.
A starting point for patient management
In a comment, Vincent Mukkada, MD, professor of pediatrics at the University of Cincinnati and an attending physician in gastroenterology, hepatology, and nutrition at Cincinnati Children’s Hospital and Medical Center, observed that, though improved awareness among pediatric gastroenterologists may account for some of the increase in GI eosinophil disease, the incidence is also likely growing.
“We’re looking for them much more,” said Dr. Mukkada.
“But I also think they’re increasing, just like all other atopic diseases. We’re not sure why,” he added.
“The hope is that these guidelines will allow nonsubspecialized gastroenterologists and allergists feel comfortable to at least start on the journey of managing these patients. And, for pediatricians who learn that their patient has received a non-EoE EGID diagnosis, they can go to the summary figures in this one document and very quickly get an overview of the disease and its course,” Dr. Mukkada said.
Guideline development was funded by the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition and the European Society for Pediatric Gastroenterology, Hepatology and Nutrition. The authors and Dr. Mukkada reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
FROM THE JOURNAL OF PEDIATRIC GASTROENTEROLOGY & NUTRITION
App cuts alcohol intake in risky drinkers
The key to reducing problem drinking may just be an app away.
, researchers in Australia have found.
Participants in the randomized controlled trial tracked information about their alcohol consumption, including the quantity and frequency. The intervention then generated an impulsivity score and implications for their risk for alcohol-related disorders and diseases, hospitalization, and death. The findings were published in Alcohol: Clinical & Experimental Research.
Worldwide each year, alcohol consumption accounts for 5.3% of all deaths. In the United States, an estimated 29.5 million people older than 12 years had alcohol use disorder in 2021.
More than 60% of people with alcohol use problems never seek out in-person treatment. Many are deterred from doing so by fear of judgment, stigma, and embarrassment, especially those at the low end of the alcohol use severity spectrum, according to the Australian researchers. Such fear-based barriers, however, may be overcome through the anonymity of a smartphone app.
The researchers tested whether hazardous drinkers who receive personalized feedback about their alcohol consumption and level of self-control would reduce their problem drinking more than hazardous drinkers who received only personalized information about their alcohol consumption or no feedback at all would.
“I knew from my previous research that just putting in the information is not enough to change someone’s drinking: It seems that putting in the information and then having someone tell you, ‘You drank x number of drinks, and that level of drinking is high according to Australian or WHO [World Health Organization] standards’ seems to be the critical point,” said Antoinette Poulton, PhD, of the University of Melbourne, who developed the app and led the study.
The study was conducted among first-year psychology students at the University of Melbourne between 2020 and 2022.
Each of the 313 participants in the study (average age 21.7 years; 74% women) provided estimates of alcohol intake over 14 days. A subset of 178 individuals utilized Alcohol Capture, the validated smartphone app, which records alcohol intake in real-time and includes an online cognitive task assessing impulsivity.
Participants were categorized as “hazardous” or “nonharmful” drinkers according to guidelines from the World Health Organization and were divided into three groups. Members in the alcohol intake feedback (Alc) group were given personalized feedback about their alcohol consumption, including whether their drinking exceeded Australian and/or WHO guidelines. Others were assigned to the Alc plus cognitive feedback (AlcCog) group and received the same feedback plus details about their level of self-control and information about the links between poor self-control and vulnerability for transition to alcohol use disorder. The control group did not receive personalized feedback. After 8 weeks, alcohol intake was again recorded over 14 days.
Relative to hazardous drinkers in the control group, total alcohol consumption among risky drinkers in the Alc group fell by 32% (or 3.8 standard drinks per week) and by 35% (or 4.2 standard drinks per week) in the AlcCog group, according to the researchers. That difference was not statistically significant.
“Our brief electronic intervention had clear impact on the drinking behavior of hazardous drinkers,” the researchers reported. “In fact, following the intervention, hazardous drinkers did not differ from non-harmful ones on total alcohol intake, quantity of intake per drinking day, or frequency of six or more drinking occasions.”
Drinks per drinking day also decreased by 31% (or 1.6 standard drinks) and 32% (or 2.1 standard drinks) in the Alc and AlcCog groups, respectively, compared with the control group.
Alcohol use did not appear to change among nonharmful drinkers in any of the study groups.
“This is a nice study, because it shows that a simple, small intervention can really have a profound effect on hazardous drinking,” said Akhil Anand, MD, an addiction psychiatrist and Medical Director of the Alcohol and Drug Recovery Center at Cleveland Clinic. “It’s hard to say if this intervention would work on very severe cases, but I like it because it’s anonymous, it’s quick, it’s easily accessible, and it doesn’t take too much health care personnel power to apply it,” Dr. Anand added.
This research was supported by an Early Career Researcher grant from the University of Melbourne. Dr. Poulton and Dr. Anand reported no financial conflicts of interest.
A version of this article first appeared on Medscape.com.
The key to reducing problem drinking may just be an app away.
, researchers in Australia have found.
Participants in the randomized controlled trial tracked information about their alcohol consumption, including the quantity and frequency. The intervention then generated an impulsivity score and implications for their risk for alcohol-related disorders and diseases, hospitalization, and death. The findings were published in Alcohol: Clinical & Experimental Research.
Worldwide each year, alcohol consumption accounts for 5.3% of all deaths. In the United States, an estimated 29.5 million people older than 12 years had alcohol use disorder in 2021.
More than 60% of people with alcohol use problems never seek out in-person treatment. Many are deterred from doing so by fear of judgment, stigma, and embarrassment, especially those at the low end of the alcohol use severity spectrum, according to the Australian researchers. Such fear-based barriers, however, may be overcome through the anonymity of a smartphone app.
The researchers tested whether hazardous drinkers who receive personalized feedback about their alcohol consumption and level of self-control would reduce their problem drinking more than hazardous drinkers who received only personalized information about their alcohol consumption or no feedback at all would.
“I knew from my previous research that just putting in the information is not enough to change someone’s drinking: It seems that putting in the information and then having someone tell you, ‘You drank x number of drinks, and that level of drinking is high according to Australian or WHO [World Health Organization] standards’ seems to be the critical point,” said Antoinette Poulton, PhD, of the University of Melbourne, who developed the app and led the study.
The study was conducted among first-year psychology students at the University of Melbourne between 2020 and 2022.
Each of the 313 participants in the study (average age 21.7 years; 74% women) provided estimates of alcohol intake over 14 days. A subset of 178 individuals utilized Alcohol Capture, the validated smartphone app, which records alcohol intake in real-time and includes an online cognitive task assessing impulsivity.
Participants were categorized as “hazardous” or “nonharmful” drinkers according to guidelines from the World Health Organization and were divided into three groups. Members in the alcohol intake feedback (Alc) group were given personalized feedback about their alcohol consumption, including whether their drinking exceeded Australian and/or WHO guidelines. Others were assigned to the Alc plus cognitive feedback (AlcCog) group and received the same feedback plus details about their level of self-control and information about the links between poor self-control and vulnerability for transition to alcohol use disorder. The control group did not receive personalized feedback. After 8 weeks, alcohol intake was again recorded over 14 days.
Relative to hazardous drinkers in the control group, total alcohol consumption among risky drinkers in the Alc group fell by 32% (or 3.8 standard drinks per week) and by 35% (or 4.2 standard drinks per week) in the AlcCog group, according to the researchers. That difference was not statistically significant.
“Our brief electronic intervention had clear impact on the drinking behavior of hazardous drinkers,” the researchers reported. “In fact, following the intervention, hazardous drinkers did not differ from non-harmful ones on total alcohol intake, quantity of intake per drinking day, or frequency of six or more drinking occasions.”
Drinks per drinking day also decreased by 31% (or 1.6 standard drinks) and 32% (or 2.1 standard drinks) in the Alc and AlcCog groups, respectively, compared with the control group.
Alcohol use did not appear to change among nonharmful drinkers in any of the study groups.
“This is a nice study, because it shows that a simple, small intervention can really have a profound effect on hazardous drinking,” said Akhil Anand, MD, an addiction psychiatrist and Medical Director of the Alcohol and Drug Recovery Center at Cleveland Clinic. “It’s hard to say if this intervention would work on very severe cases, but I like it because it’s anonymous, it’s quick, it’s easily accessible, and it doesn’t take too much health care personnel power to apply it,” Dr. Anand added.
This research was supported by an Early Career Researcher grant from the University of Melbourne. Dr. Poulton and Dr. Anand reported no financial conflicts of interest.
A version of this article first appeared on Medscape.com.
The key to reducing problem drinking may just be an app away.
, researchers in Australia have found.
Participants in the randomized controlled trial tracked information about their alcohol consumption, including the quantity and frequency. The intervention then generated an impulsivity score and implications for their risk for alcohol-related disorders and diseases, hospitalization, and death. The findings were published in Alcohol: Clinical & Experimental Research.
Worldwide each year, alcohol consumption accounts for 5.3% of all deaths. In the United States, an estimated 29.5 million people older than 12 years had alcohol use disorder in 2021.
More than 60% of people with alcohol use problems never seek out in-person treatment. Many are deterred from doing so by fear of judgment, stigma, and embarrassment, especially those at the low end of the alcohol use severity spectrum, according to the Australian researchers. Such fear-based barriers, however, may be overcome through the anonymity of a smartphone app.
The researchers tested whether hazardous drinkers who receive personalized feedback about their alcohol consumption and level of self-control would reduce their problem drinking more than hazardous drinkers who received only personalized information about their alcohol consumption or no feedback at all would.
“I knew from my previous research that just putting in the information is not enough to change someone’s drinking: It seems that putting in the information and then having someone tell you, ‘You drank x number of drinks, and that level of drinking is high according to Australian or WHO [World Health Organization] standards’ seems to be the critical point,” said Antoinette Poulton, PhD, of the University of Melbourne, who developed the app and led the study.
The study was conducted among first-year psychology students at the University of Melbourne between 2020 and 2022.
Each of the 313 participants in the study (average age 21.7 years; 74% women) provided estimates of alcohol intake over 14 days. A subset of 178 individuals utilized Alcohol Capture, the validated smartphone app, which records alcohol intake in real-time and includes an online cognitive task assessing impulsivity.
Participants were categorized as “hazardous” or “nonharmful” drinkers according to guidelines from the World Health Organization and were divided into three groups. Members in the alcohol intake feedback (Alc) group were given personalized feedback about their alcohol consumption, including whether their drinking exceeded Australian and/or WHO guidelines. Others were assigned to the Alc plus cognitive feedback (AlcCog) group and received the same feedback plus details about their level of self-control and information about the links between poor self-control and vulnerability for transition to alcohol use disorder. The control group did not receive personalized feedback. After 8 weeks, alcohol intake was again recorded over 14 days.
Relative to hazardous drinkers in the control group, total alcohol consumption among risky drinkers in the Alc group fell by 32% (or 3.8 standard drinks per week) and by 35% (or 4.2 standard drinks per week) in the AlcCog group, according to the researchers. That difference was not statistically significant.
“Our brief electronic intervention had clear impact on the drinking behavior of hazardous drinkers,” the researchers reported. “In fact, following the intervention, hazardous drinkers did not differ from non-harmful ones on total alcohol intake, quantity of intake per drinking day, or frequency of six or more drinking occasions.”
Drinks per drinking day also decreased by 31% (or 1.6 standard drinks) and 32% (or 2.1 standard drinks) in the Alc and AlcCog groups, respectively, compared with the control group.
Alcohol use did not appear to change among nonharmful drinkers in any of the study groups.
“This is a nice study, because it shows that a simple, small intervention can really have a profound effect on hazardous drinking,” said Akhil Anand, MD, an addiction psychiatrist and Medical Director of the Alcohol and Drug Recovery Center at Cleveland Clinic. “It’s hard to say if this intervention would work on very severe cases, but I like it because it’s anonymous, it’s quick, it’s easily accessible, and it doesn’t take too much health care personnel power to apply it,” Dr. Anand added.
This research was supported by an Early Career Researcher grant from the University of Melbourne. Dr. Poulton and Dr. Anand reported no financial conflicts of interest.
A version of this article first appeared on Medscape.com.
FROM ALCOHOL: CLINICAL & EXPERIMENTAL RESEARCH
COPD: Large-scale study suggests protective role for vitamin D
COPD risk was 23% higher in people within the lowest quintile vs. the fourth quintile of 25(OH)D concentrations, according to research appearing in BMJ Open Respiratory Research.
While low vitamin D status has been linked to increased inflammatory diseases risk and to the regulation of pathogenic mechanisms in COPD, epidemiological evidence regarding the associations of 25(OH)D concentrations with COPD incidence and survival remains inconclusive, Zheng Zhu, MD, of Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China, and colleagues wrote.
From UK Biobank data recorded from 403,648 participants (mean age 56.4 years; 54% women) who were free of COPD at baseline and had 25(OH)D measurements, researchers estimated hazard ratios and 95% confidence intervals for the associations of 25(OH)D concentrations with COPD risk and survival. After median follow-up of 12.3 years (ending Sept. 30, 2021), with 11,008 COPD cases recorded, beyond the COPD and mortality increase (HR, 1.23; 95% CI, 1.16-1.31) in the lowest quintile of 25(OH)D concentrations, risk for overall death was 38% higher, as well (HR, 1.38; 95% CI, 1.22-1.56). Serum concentrations were greater than 64.6 nmol/L in the highest (quintile 5) and less than 31.7 nmol/L in the lowest (quintile 1). Also, men and current smokers had higher COPD and mortality risk (P interaction for both: < .05).
While event rates tracked generally inversely with 25(OH)D concentrations, overall the event curves were non-linear. Dr Zhu and associates reported that the decreasing risk of COPD appeared to be lowest at 55 nmol/L of 25(OH)D within quintile 4 (51.8 to < 64.6 nmol/L). Furthermore, lower prediagnostic 25(OH)D concentrations were associated with a significant decrease in overall and COPD-specific survival.
Smoking is the most commonly encountered risk factor for COPD, the researchers noted, and their findings indicated that 25(OH)D concentrations were inversely associated with COPD risk in both smokers and never-smokers. In a fully adjusted model, compared with quintile 4, the quintile 1 increase in COPD risk was 25% in never-smokers and 23% in smokers.
“Our findings imply that vitamin D might play a role in progression of COPD,” the authors stated. They added, “Whether lower concentrations of 25(OH)D are causal or contributory to COPD risk may spur future long-duration and large-scale RCTs.”
“Vitamin D has an important function in the immune system and lower serum levels have been implicated in a variety of inflammatory diseases,” commented associate professor of medicine Diego J. Maselli, MD, who is chief of the division of pulmonary diseases & critical care at UT Health San Antonio. “Patients with COPD often have lower levels of vitamin D compared to healthy individuals. COPD patients with low serum levels of vitamin D may have a higher risk of exacerbations and worse lung function.”
He added, “The research by Zhu and colleagues adds to the field of study and highlights the potential role of vitamin D in the pathophysiology of COPD. It is important to remember that these associations do not establish causality, as patients with chronic and debilitating diseases may have limited sunlight exposure, poor nutritional intake, and other behaviors that may affect vitamin D levels. There are mixed results in studies evaluating the role of supplementing vitamin D in COPD with regards to disease progression and exacerbation reduction. While there are some studies that report that supplementation of vitamin D can reduce COPD exacerbations, there is still a need for randomized controlled studies that explore if the supplementation of vitamin D can prevent the development of COPD, particularly in those who actively smoke. Yet, it is reasonable to evaluate the serum vitamin D levels in COPD patients who have had exacerbations and supplement when there is a severe deficiency.”
Given that the majority of participants in this study were from the United Kingdom, the researchers stated, a study limitation is that findings might not apply to other populations.
No disclosures were reported by Dr. Zhu or by Dr. Maselli.
COPD risk was 23% higher in people within the lowest quintile vs. the fourth quintile of 25(OH)D concentrations, according to research appearing in BMJ Open Respiratory Research.
While low vitamin D status has been linked to increased inflammatory diseases risk and to the regulation of pathogenic mechanisms in COPD, epidemiological evidence regarding the associations of 25(OH)D concentrations with COPD incidence and survival remains inconclusive, Zheng Zhu, MD, of Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China, and colleagues wrote.
From UK Biobank data recorded from 403,648 participants (mean age 56.4 years; 54% women) who were free of COPD at baseline and had 25(OH)D measurements, researchers estimated hazard ratios and 95% confidence intervals for the associations of 25(OH)D concentrations with COPD risk and survival. After median follow-up of 12.3 years (ending Sept. 30, 2021), with 11,008 COPD cases recorded, beyond the COPD and mortality increase (HR, 1.23; 95% CI, 1.16-1.31) in the lowest quintile of 25(OH)D concentrations, risk for overall death was 38% higher, as well (HR, 1.38; 95% CI, 1.22-1.56). Serum concentrations were greater than 64.6 nmol/L in the highest (quintile 5) and less than 31.7 nmol/L in the lowest (quintile 1). Also, men and current smokers had higher COPD and mortality risk (P interaction for both: < .05).
While event rates tracked generally inversely with 25(OH)D concentrations, overall the event curves were non-linear. Dr Zhu and associates reported that the decreasing risk of COPD appeared to be lowest at 55 nmol/L of 25(OH)D within quintile 4 (51.8 to < 64.6 nmol/L). Furthermore, lower prediagnostic 25(OH)D concentrations were associated with a significant decrease in overall and COPD-specific survival.
Smoking is the most commonly encountered risk factor for COPD, the researchers noted, and their findings indicated that 25(OH)D concentrations were inversely associated with COPD risk in both smokers and never-smokers. In a fully adjusted model, compared with quintile 4, the quintile 1 increase in COPD risk was 25% in never-smokers and 23% in smokers.
“Our findings imply that vitamin D might play a role in progression of COPD,” the authors stated. They added, “Whether lower concentrations of 25(OH)D are causal or contributory to COPD risk may spur future long-duration and large-scale RCTs.”
“Vitamin D has an important function in the immune system and lower serum levels have been implicated in a variety of inflammatory diseases,” commented associate professor of medicine Diego J. Maselli, MD, who is chief of the division of pulmonary diseases & critical care at UT Health San Antonio. “Patients with COPD often have lower levels of vitamin D compared to healthy individuals. COPD patients with low serum levels of vitamin D may have a higher risk of exacerbations and worse lung function.”
He added, “The research by Zhu and colleagues adds to the field of study and highlights the potential role of vitamin D in the pathophysiology of COPD. It is important to remember that these associations do not establish causality, as patients with chronic and debilitating diseases may have limited sunlight exposure, poor nutritional intake, and other behaviors that may affect vitamin D levels. There are mixed results in studies evaluating the role of supplementing vitamin D in COPD with regards to disease progression and exacerbation reduction. While there are some studies that report that supplementation of vitamin D can reduce COPD exacerbations, there is still a need for randomized controlled studies that explore if the supplementation of vitamin D can prevent the development of COPD, particularly in those who actively smoke. Yet, it is reasonable to evaluate the serum vitamin D levels in COPD patients who have had exacerbations and supplement when there is a severe deficiency.”
Given that the majority of participants in this study were from the United Kingdom, the researchers stated, a study limitation is that findings might not apply to other populations.
No disclosures were reported by Dr. Zhu or by Dr. Maselli.
COPD risk was 23% higher in people within the lowest quintile vs. the fourth quintile of 25(OH)D concentrations, according to research appearing in BMJ Open Respiratory Research.
While low vitamin D status has been linked to increased inflammatory diseases risk and to the regulation of pathogenic mechanisms in COPD, epidemiological evidence regarding the associations of 25(OH)D concentrations with COPD incidence and survival remains inconclusive, Zheng Zhu, MD, of Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China, and colleagues wrote.
From UK Biobank data recorded from 403,648 participants (mean age 56.4 years; 54% women) who were free of COPD at baseline and had 25(OH)D measurements, researchers estimated hazard ratios and 95% confidence intervals for the associations of 25(OH)D concentrations with COPD risk and survival. After median follow-up of 12.3 years (ending Sept. 30, 2021), with 11,008 COPD cases recorded, beyond the COPD and mortality increase (HR, 1.23; 95% CI, 1.16-1.31) in the lowest quintile of 25(OH)D concentrations, risk for overall death was 38% higher, as well (HR, 1.38; 95% CI, 1.22-1.56). Serum concentrations were greater than 64.6 nmol/L in the highest (quintile 5) and less than 31.7 nmol/L in the lowest (quintile 1). Also, men and current smokers had higher COPD and mortality risk (P interaction for both: < .05).
While event rates tracked generally inversely with 25(OH)D concentrations, overall the event curves were non-linear. Dr Zhu and associates reported that the decreasing risk of COPD appeared to be lowest at 55 nmol/L of 25(OH)D within quintile 4 (51.8 to < 64.6 nmol/L). Furthermore, lower prediagnostic 25(OH)D concentrations were associated with a significant decrease in overall and COPD-specific survival.
Smoking is the most commonly encountered risk factor for COPD, the researchers noted, and their findings indicated that 25(OH)D concentrations were inversely associated with COPD risk in both smokers and never-smokers. In a fully adjusted model, compared with quintile 4, the quintile 1 increase in COPD risk was 25% in never-smokers and 23% in smokers.
“Our findings imply that vitamin D might play a role in progression of COPD,” the authors stated. They added, “Whether lower concentrations of 25(OH)D are causal or contributory to COPD risk may spur future long-duration and large-scale RCTs.”
“Vitamin D has an important function in the immune system and lower serum levels have been implicated in a variety of inflammatory diseases,” commented associate professor of medicine Diego J. Maselli, MD, who is chief of the division of pulmonary diseases & critical care at UT Health San Antonio. “Patients with COPD often have lower levels of vitamin D compared to healthy individuals. COPD patients with low serum levels of vitamin D may have a higher risk of exacerbations and worse lung function.”
He added, “The research by Zhu and colleagues adds to the field of study and highlights the potential role of vitamin D in the pathophysiology of COPD. It is important to remember that these associations do not establish causality, as patients with chronic and debilitating diseases may have limited sunlight exposure, poor nutritional intake, and other behaviors that may affect vitamin D levels. There are mixed results in studies evaluating the role of supplementing vitamin D in COPD with regards to disease progression and exacerbation reduction. While there are some studies that report that supplementation of vitamin D can reduce COPD exacerbations, there is still a need for randomized controlled studies that explore if the supplementation of vitamin D can prevent the development of COPD, particularly in those who actively smoke. Yet, it is reasonable to evaluate the serum vitamin D levels in COPD patients who have had exacerbations and supplement when there is a severe deficiency.”
Given that the majority of participants in this study were from the United Kingdom, the researchers stated, a study limitation is that findings might not apply to other populations.
No disclosures were reported by Dr. Zhu or by Dr. Maselli.
FROM BMJ OPEN RESPIRATORY RESEARCH
Antidrug antibody effects compared across RA biologics
TOPLINE:
In patients with rheumatoid arthritis, the presence of antidrug antibodies was associated with a diminished response to biologic disease-modifying antirheumatic drugs in a prospective cohort study.
METHODOLOGY:
- Researchers prospectively analyzed data from 230 patients (mean age, 54.3 years; 77.0% women) with RA diagnosis recruited from March 3, 2014, to June 21, 2016.
- All were initiating new treatment with an anti–tumor necrosis factor (TNF) monoclonal antibody (mAb; either infliximab or adalimumab), etanercept, tocilizumab, or rituximab, according to the choice of the treating physician.
- The primary outcome was the association of antidrug antibody positivity with European Alliance of Associations for Rheumatology (EULAR) response to treatment at month 12, assessed through univariate logistic regression.
TAKEAWAY:
- At month 12, antidrug antibody positivity was 38.2% in patients who were treated with anti-TNF mAbs, 6.1% with etanercept, 50.0% with rituximab, and 20.0% with tocilizumab.
- There was an inverse association between antidrug antibody positivity directed against all biologic drugs and EULAR response at month 12 (odds ratio, 0.19; 95% confidence interval, 0.09-0.38; P < .001).
- In the multivariable analysis, antidrug antibodies, body mass index, and rheumatoid factor were independently and inversely associated with response to treatment.
- There was a significantly higher drug concentration of anti-TNF mAbs in patients with antidrug antibody–negative vs. antidrug antibody–positive status (mean difference, –9.6 mg/L; 95% CI, –12.4 to –6.9; P < .001).
IN PRACTICE:
Findings of this study suggest that antidrug antibodies are associated with nonresponse to biologic drugs and can be monitored in the management of patients with RA, particularly nonresponders.
SOURCE:
Samuel Bitouin, MD, PhD, of the rheumatology department at Paris-Saclay University, and coauthors in the ABIRISK (Anti-Biopharmaceutical Immunization: Prediction and Analysis of Clinical Relevance to Minimize the Risk) consortium reported the study in JAMA Network Open. The work was funded by a grant from the European Union Innovative Medicines Initiative.
LIMITATIONS:
Though the study demonstrated an association when all biologic drugs were analyzed together, it was not powered to demonstrate an association for each drug class.
DISCLOSURES:
Many authors reported financial relationships with pharmaceutical companies.
A version of this article first appeared on Medscape.com.
TOPLINE:
In patients with rheumatoid arthritis, the presence of antidrug antibodies was associated with a diminished response to biologic disease-modifying antirheumatic drugs in a prospective cohort study.
METHODOLOGY:
- Researchers prospectively analyzed data from 230 patients (mean age, 54.3 years; 77.0% women) with RA diagnosis recruited from March 3, 2014, to June 21, 2016.
- All were initiating new treatment with an anti–tumor necrosis factor (TNF) monoclonal antibody (mAb; either infliximab or adalimumab), etanercept, tocilizumab, or rituximab, according to the choice of the treating physician.
- The primary outcome was the association of antidrug antibody positivity with European Alliance of Associations for Rheumatology (EULAR) response to treatment at month 12, assessed through univariate logistic regression.
TAKEAWAY:
- At month 12, antidrug antibody positivity was 38.2% in patients who were treated with anti-TNF mAbs, 6.1% with etanercept, 50.0% with rituximab, and 20.0% with tocilizumab.
- There was an inverse association between antidrug antibody positivity directed against all biologic drugs and EULAR response at month 12 (odds ratio, 0.19; 95% confidence interval, 0.09-0.38; P < .001).
- In the multivariable analysis, antidrug antibodies, body mass index, and rheumatoid factor were independently and inversely associated with response to treatment.
- There was a significantly higher drug concentration of anti-TNF mAbs in patients with antidrug antibody–negative vs. antidrug antibody–positive status (mean difference, –9.6 mg/L; 95% CI, –12.4 to –6.9; P < .001).
IN PRACTICE:
Findings of this study suggest that antidrug antibodies are associated with nonresponse to biologic drugs and can be monitored in the management of patients with RA, particularly nonresponders.
SOURCE:
Samuel Bitouin, MD, PhD, of the rheumatology department at Paris-Saclay University, and coauthors in the ABIRISK (Anti-Biopharmaceutical Immunization: Prediction and Analysis of Clinical Relevance to Minimize the Risk) consortium reported the study in JAMA Network Open. The work was funded by a grant from the European Union Innovative Medicines Initiative.
LIMITATIONS:
Though the study demonstrated an association when all biologic drugs were analyzed together, it was not powered to demonstrate an association for each drug class.
DISCLOSURES:
Many authors reported financial relationships with pharmaceutical companies.
A version of this article first appeared on Medscape.com.
TOPLINE:
In patients with rheumatoid arthritis, the presence of antidrug antibodies was associated with a diminished response to biologic disease-modifying antirheumatic drugs in a prospective cohort study.
METHODOLOGY:
- Researchers prospectively analyzed data from 230 patients (mean age, 54.3 years; 77.0% women) with RA diagnosis recruited from March 3, 2014, to June 21, 2016.
- All were initiating new treatment with an anti–tumor necrosis factor (TNF) monoclonal antibody (mAb; either infliximab or adalimumab), etanercept, tocilizumab, or rituximab, according to the choice of the treating physician.
- The primary outcome was the association of antidrug antibody positivity with European Alliance of Associations for Rheumatology (EULAR) response to treatment at month 12, assessed through univariate logistic regression.
TAKEAWAY:
- At month 12, antidrug antibody positivity was 38.2% in patients who were treated with anti-TNF mAbs, 6.1% with etanercept, 50.0% with rituximab, and 20.0% with tocilizumab.
- There was an inverse association between antidrug antibody positivity directed against all biologic drugs and EULAR response at month 12 (odds ratio, 0.19; 95% confidence interval, 0.09-0.38; P < .001).
- In the multivariable analysis, antidrug antibodies, body mass index, and rheumatoid factor were independently and inversely associated with response to treatment.
- There was a significantly higher drug concentration of anti-TNF mAbs in patients with antidrug antibody–negative vs. antidrug antibody–positive status (mean difference, –9.6 mg/L; 95% CI, –12.4 to –6.9; P < .001).
IN PRACTICE:
Findings of this study suggest that antidrug antibodies are associated with nonresponse to biologic drugs and can be monitored in the management of patients with RA, particularly nonresponders.
SOURCE:
Samuel Bitouin, MD, PhD, of the rheumatology department at Paris-Saclay University, and coauthors in the ABIRISK (Anti-Biopharmaceutical Immunization: Prediction and Analysis of Clinical Relevance to Minimize the Risk) consortium reported the study in JAMA Network Open. The work was funded by a grant from the European Union Innovative Medicines Initiative.
LIMITATIONS:
Though the study demonstrated an association when all biologic drugs were analyzed together, it was not powered to demonstrate an association for each drug class.
DISCLOSURES:
Many authors reported financial relationships with pharmaceutical companies.
A version of this article first appeared on Medscape.com.
Nebulized amphotericin B does not affect aspergillosis exacerbation-free status at 1 year
Topline
Nebulized amphotericin B does not improve exacerbation-free status at 1 year for patients with bronchopulmonary aspergillosis, though it may delay onset and incidence.
Methodology
Investigators searched PubMed and Embase databases for studies that included at least five patients with allergic bronchopulmonary aspergillosis who were managed with nebulized amphotericin B.
They included five studies, two of which were randomized controlled trials (RCTs), and three were observational studies; there was a total of 188 patients.
The primary objective of this systematic review and meta-analysis was to determine the frequency of patients remaining exacerbation free 1 year after initiating treatment with nebulized amphotericin B.
Takeaway
From the studies (one observational, two RCTs; n = 84) with exacerbation data at 1 or 2 years, the pooled proportion of patients who remained exacerbation free with nebulized amphotericin B at 1 year was 76% (I2 = 64.6%).
The pooled difference in risk with the two RCTs that assessed exacerbation-free status at 1 year was 0.33 and was not significantly different between the nebulized amphotericin B and control arms, which received nebulized saline.
Two RCTs provided the time to first exacerbation, which was significantly longer with nebulized amphotericin B than with nebulized saline (337 vs. 177 days; P = .004; I2 = 82%).
The proportion of patients who experienced two or more exacerbations was significantly lower with nebulized amphotericin B than with nebulized saline (9/33 [27.3%] vs 20/38 [52.6%]; P = .03).
In practice
Also, the proportion of subjects experiencing ≥ 2 exacerbations was also lesser with NAB than in the control,” concluded Valliappan Muthu, MD, and colleagues. However, “the ideal duration and optimal dose of LAMB for nebulization are unclear.”
Study details
“Nebulized amphotericin B for preventing exacerbations in allergic bronchopulmonary aspergillosis: A systematic review and meta-analysis” was published online in Pulmonary Pharmacology and Therapeutics.
Limitations
The current review is limited by the small number of included trials and may have a high risk of bias. Therefore, more evidence is required for the use of nebulized amphotericin B in routine care. The authors have disclosed no conflicts of interest.
A version of this article originally appeared on Medscape.com.
Topline
Nebulized amphotericin B does not improve exacerbation-free status at 1 year for patients with bronchopulmonary aspergillosis, though it may delay onset and incidence.
Methodology
Investigators searched PubMed and Embase databases for studies that included at least five patients with allergic bronchopulmonary aspergillosis who were managed with nebulized amphotericin B.
They included five studies, two of which were randomized controlled trials (RCTs), and three were observational studies; there was a total of 188 patients.
The primary objective of this systematic review and meta-analysis was to determine the frequency of patients remaining exacerbation free 1 year after initiating treatment with nebulized amphotericin B.
Takeaway
From the studies (one observational, two RCTs; n = 84) with exacerbation data at 1 or 2 years, the pooled proportion of patients who remained exacerbation free with nebulized amphotericin B at 1 year was 76% (I2 = 64.6%).
The pooled difference in risk with the two RCTs that assessed exacerbation-free status at 1 year was 0.33 and was not significantly different between the nebulized amphotericin B and control arms, which received nebulized saline.
Two RCTs provided the time to first exacerbation, which was significantly longer with nebulized amphotericin B than with nebulized saline (337 vs. 177 days; P = .004; I2 = 82%).
The proportion of patients who experienced two or more exacerbations was significantly lower with nebulized amphotericin B than with nebulized saline (9/33 [27.3%] vs 20/38 [52.6%]; P = .03).
In practice
Also, the proportion of subjects experiencing ≥ 2 exacerbations was also lesser with NAB than in the control,” concluded Valliappan Muthu, MD, and colleagues. However, “the ideal duration and optimal dose of LAMB for nebulization are unclear.”
Study details
“Nebulized amphotericin B for preventing exacerbations in allergic bronchopulmonary aspergillosis: A systematic review and meta-analysis” was published online in Pulmonary Pharmacology and Therapeutics.
Limitations
The current review is limited by the small number of included trials and may have a high risk of bias. Therefore, more evidence is required for the use of nebulized amphotericin B in routine care. The authors have disclosed no conflicts of interest.
A version of this article originally appeared on Medscape.com.
Topline
Nebulized amphotericin B does not improve exacerbation-free status at 1 year for patients with bronchopulmonary aspergillosis, though it may delay onset and incidence.
Methodology
Investigators searched PubMed and Embase databases for studies that included at least five patients with allergic bronchopulmonary aspergillosis who were managed with nebulized amphotericin B.
They included five studies, two of which were randomized controlled trials (RCTs), and three were observational studies; there was a total of 188 patients.
The primary objective of this systematic review and meta-analysis was to determine the frequency of patients remaining exacerbation free 1 year after initiating treatment with nebulized amphotericin B.
Takeaway
From the studies (one observational, two RCTs; n = 84) with exacerbation data at 1 or 2 years, the pooled proportion of patients who remained exacerbation free with nebulized amphotericin B at 1 year was 76% (I2 = 64.6%).
The pooled difference in risk with the two RCTs that assessed exacerbation-free status at 1 year was 0.33 and was not significantly different between the nebulized amphotericin B and control arms, which received nebulized saline.
Two RCTs provided the time to first exacerbation, which was significantly longer with nebulized amphotericin B than with nebulized saline (337 vs. 177 days; P = .004; I2 = 82%).
The proportion of patients who experienced two or more exacerbations was significantly lower with nebulized amphotericin B than with nebulized saline (9/33 [27.3%] vs 20/38 [52.6%]; P = .03).
In practice
Also, the proportion of subjects experiencing ≥ 2 exacerbations was also lesser with NAB than in the control,” concluded Valliappan Muthu, MD, and colleagues. However, “the ideal duration and optimal dose of LAMB for nebulization are unclear.”
Study details
“Nebulized amphotericin B for preventing exacerbations in allergic bronchopulmonary aspergillosis: A systematic review and meta-analysis” was published online in Pulmonary Pharmacology and Therapeutics.
Limitations
The current review is limited by the small number of included trials and may have a high risk of bias. Therefore, more evidence is required for the use of nebulized amphotericin B in routine care. The authors have disclosed no conflicts of interest.
A version of this article originally appeared on Medscape.com.
Pulmonary embolism confers higher mortality long term
Topline
Long-term mortality rates among individuals who have had a pulmonary embolism are significantly higher than rates in the general population.
Methodology
Researchers investigated long-term outcomes of patients with pulmonary embolism in a single-center registry.
They followed 896 patients for up to 14 years.
Data were from consecutive cases treated between May 2005 and December 2017.
Takeaway
The total follow-up time was 3,908 patient-years (median, 3.1 years).
One-year and five-year mortality rates were 19.7% (95% confidence interval, 17.2%-22.4%) and 37.1% (95% CI, 33.6%-40.5%), respectively, for patients with pulmonary embolism.
The most frequent causes of death were cancer (28.5%), pulmonary embolism (19.4%), infections (13.9%), and cardiovascular events (11.6%).
Late mortality (>30 days) was more frequent than in the general population for patients with cancer (5-year standardized mortality ratio, 2.77; 95% CI, 2.41-3.16) and for patients without cancer (1.80; 95% CI, 1.50-2.14), compared with expected rates.
In practice
stated Johannes Eckelt, Clinic of Cardiology and Pneumology, University Medical Center Göttingen (Germany).
Source
“Long-term Mortality in Pulmonary Embolism: Results in a Single-Center Registry,” by Mr. Eckelt and colleagues was published in Research and Practice in Thrombosis and Haemostasis.
Limitations
Owing to the single-center study design, selection bias cannot be excluded, limiting the generalizability of the study findings, the authors stated.
Disclosures
The authors have disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
Topline
Long-term mortality rates among individuals who have had a pulmonary embolism are significantly higher than rates in the general population.
Methodology
Researchers investigated long-term outcomes of patients with pulmonary embolism in a single-center registry.
They followed 896 patients for up to 14 years.
Data were from consecutive cases treated between May 2005 and December 2017.
Takeaway
The total follow-up time was 3,908 patient-years (median, 3.1 years).
One-year and five-year mortality rates were 19.7% (95% confidence interval, 17.2%-22.4%) and 37.1% (95% CI, 33.6%-40.5%), respectively, for patients with pulmonary embolism.
The most frequent causes of death were cancer (28.5%), pulmonary embolism (19.4%), infections (13.9%), and cardiovascular events (11.6%).
Late mortality (>30 days) was more frequent than in the general population for patients with cancer (5-year standardized mortality ratio, 2.77; 95% CI, 2.41-3.16) and for patients without cancer (1.80; 95% CI, 1.50-2.14), compared with expected rates.
In practice
stated Johannes Eckelt, Clinic of Cardiology and Pneumology, University Medical Center Göttingen (Germany).
Source
“Long-term Mortality in Pulmonary Embolism: Results in a Single-Center Registry,” by Mr. Eckelt and colleagues was published in Research and Practice in Thrombosis and Haemostasis.
Limitations
Owing to the single-center study design, selection bias cannot be excluded, limiting the generalizability of the study findings, the authors stated.
Disclosures
The authors have disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
Topline
Long-term mortality rates among individuals who have had a pulmonary embolism are significantly higher than rates in the general population.
Methodology
Researchers investigated long-term outcomes of patients with pulmonary embolism in a single-center registry.
They followed 896 patients for up to 14 years.
Data were from consecutive cases treated between May 2005 and December 2017.
Takeaway
The total follow-up time was 3,908 patient-years (median, 3.1 years).
One-year and five-year mortality rates were 19.7% (95% confidence interval, 17.2%-22.4%) and 37.1% (95% CI, 33.6%-40.5%), respectively, for patients with pulmonary embolism.
The most frequent causes of death were cancer (28.5%), pulmonary embolism (19.4%), infections (13.9%), and cardiovascular events (11.6%).
Late mortality (>30 days) was more frequent than in the general population for patients with cancer (5-year standardized mortality ratio, 2.77; 95% CI, 2.41-3.16) and for patients without cancer (1.80; 95% CI, 1.50-2.14), compared with expected rates.
In practice
stated Johannes Eckelt, Clinic of Cardiology and Pneumology, University Medical Center Göttingen (Germany).
Source
“Long-term Mortality in Pulmonary Embolism: Results in a Single-Center Registry,” by Mr. Eckelt and colleagues was published in Research and Practice in Thrombosis and Haemostasis.
Limitations
Owing to the single-center study design, selection bias cannot be excluded, limiting the generalizability of the study findings, the authors stated.
Disclosures
The authors have disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
Observation recommended as first-line therapy in select cases of primary spontaneous pneumothorax
Observation should be considered the first-line treatment of choice in appropriately selected primary spontaneous pneumothorax patients, according to a review comparing observation alone with aspiration or chest tube placement.
Observation was the dominant choice, based on economic modeling showing it to offer both the highest utility and the lowest cost, according to the review, published in CHEST, which encompassed 20 years of relevant publications.
, Gilgamesh Eamer, MD, MSc, FRCSC, of Children’s Hospital of Eastern Ontario, Ottawa, and colleagues wrote. They pointed to recent studies suggesting equivalent or improved outcomes with simple observation in appropriately selected patients. The authors asked, “What management strategy derives the most utility for patients given the cost and morbidity of chest tube placement, hospital admission, surgical intervention and the risk of recurrence of primary spontaneous pneumothorax.”
Primary spontaneous pneumothorax, which leads to progressive pulmonary collapse and respiratory compromise, is thought to be attributable to rupture of air-containing blisters (or bullae) formed under the visceral pleura of the lung, according to the researchers. They stated that, while prior systematic reviews have examined various primary spontaneous pneumothorax management techniques, no reviews encompass more recently published high-quality studies comparing aspiration to other interventions such as observation or Heimlich valve devices.
The authors identified 22 articles for systematic review and meta-analysis after screening an initial list of 5,179 potentially relevant articles (Jan. 1, 2000 to April 10, 2020). They compared observation, needle aspiration, and chest tube placement, and created an economic model for these three treatment pathways based on Canadian medical cost data. The primary outcome measure was resolution following the initial intervention. Secondary outcomes included primary spontaneous pneumothorax recurrence, length of hospital stay, and treatment complications.
The analysis revealed that, compared with observation, chest tube and aspiration had higher resolution without additional intervention (relative risk for chest tube, 0.81; P < .01; RR for aspiration, 0.73; P < .01). Compared with a chest tube, observation and aspiration had shorter length of stay (mean difference for observation, 5.17; P < .01): (MD for aspiration, 2.72; P < .01).
Two-year recurrence rates did not differ between management strategies. Cost utility modeling found a cost of $14,658 (Canadian dollars [CAD] with 1.2535 = 1 US dollar) for chest tube placement, $13,126 CAD for aspiration, and $6,408 CAD for observation.
The utility (a measure including both quantity and quality of life) for each management arm was 0.77 for CT placement, 0.79 for aspiration, and 0.82 for observation. “The observation arm dominates the other two arms meaning it results in a more desirable (higher) utility with lower cost and results in a negative ICER [incremental cost-effectiveness ratio],” the authors stated.
They observed further that it is not typical for a medical intervention to improve patient outcomes, compared with standard care, and at the same time to bring costs down. “Given this, and the increasing evidence that observation is safe and effective in appropriately selected patients presenting with primary spontaneous pneumothorax,” they concluded that “observation should be considered in all patients presenting with primary spontaneous pneumothorax who meet predefined criteria.” They added that, because aspiration is favored over chest tube placement, it should be considered second-line therapy in well-selected primary spontaneous pneumothorax patients presenting with recurrence or who have failed a trial of observation.
“This review sheds light on ‘less is better’ for primary spontaneous pneumothorax management,” commented Dharani K. Narendra, MD, of the department of medicine, Baylor College of Medicine, Houston. “It allows clinicians to utilize a ‘wait approach’ versus invasive treatment. Interestingly, recurrence was lower in the observation group.” She said further, in an interview, “In general we assume that if no intervention is done, there is higher chance of recurrence. However, this meta-analysis reveals that is not the case; there is no difference in recurrence of pneumothorax in all groups and fewer complications in the observation group. The invasive treatments such as aspiration or chest tube are risky as they have more complications like pain, bleeding, injury to surrounding structures, etc.”
Neither Dr. Eamer nor Dr. Narendra reported any conflicts of interest. The study was self-funded.
Observation should be considered the first-line treatment of choice in appropriately selected primary spontaneous pneumothorax patients, according to a review comparing observation alone with aspiration or chest tube placement.
Observation was the dominant choice, based on economic modeling showing it to offer both the highest utility and the lowest cost, according to the review, published in CHEST, which encompassed 20 years of relevant publications.
, Gilgamesh Eamer, MD, MSc, FRCSC, of Children’s Hospital of Eastern Ontario, Ottawa, and colleagues wrote. They pointed to recent studies suggesting equivalent or improved outcomes with simple observation in appropriately selected patients. The authors asked, “What management strategy derives the most utility for patients given the cost and morbidity of chest tube placement, hospital admission, surgical intervention and the risk of recurrence of primary spontaneous pneumothorax.”
Primary spontaneous pneumothorax, which leads to progressive pulmonary collapse and respiratory compromise, is thought to be attributable to rupture of air-containing blisters (or bullae) formed under the visceral pleura of the lung, according to the researchers. They stated that, while prior systematic reviews have examined various primary spontaneous pneumothorax management techniques, no reviews encompass more recently published high-quality studies comparing aspiration to other interventions such as observation or Heimlich valve devices.
The authors identified 22 articles for systematic review and meta-analysis after screening an initial list of 5,179 potentially relevant articles (Jan. 1, 2000 to April 10, 2020). They compared observation, needle aspiration, and chest tube placement, and created an economic model for these three treatment pathways based on Canadian medical cost data. The primary outcome measure was resolution following the initial intervention. Secondary outcomes included primary spontaneous pneumothorax recurrence, length of hospital stay, and treatment complications.
The analysis revealed that, compared with observation, chest tube and aspiration had higher resolution without additional intervention (relative risk for chest tube, 0.81; P < .01; RR for aspiration, 0.73; P < .01). Compared with a chest tube, observation and aspiration had shorter length of stay (mean difference for observation, 5.17; P < .01): (MD for aspiration, 2.72; P < .01).
Two-year recurrence rates did not differ between management strategies. Cost utility modeling found a cost of $14,658 (Canadian dollars [CAD] with 1.2535 = 1 US dollar) for chest tube placement, $13,126 CAD for aspiration, and $6,408 CAD for observation.
The utility (a measure including both quantity and quality of life) for each management arm was 0.77 for CT placement, 0.79 for aspiration, and 0.82 for observation. “The observation arm dominates the other two arms meaning it results in a more desirable (higher) utility with lower cost and results in a negative ICER [incremental cost-effectiveness ratio],” the authors stated.
They observed further that it is not typical for a medical intervention to improve patient outcomes, compared with standard care, and at the same time to bring costs down. “Given this, and the increasing evidence that observation is safe and effective in appropriately selected patients presenting with primary spontaneous pneumothorax,” they concluded that “observation should be considered in all patients presenting with primary spontaneous pneumothorax who meet predefined criteria.” They added that, because aspiration is favored over chest tube placement, it should be considered second-line therapy in well-selected primary spontaneous pneumothorax patients presenting with recurrence or who have failed a trial of observation.
“This review sheds light on ‘less is better’ for primary spontaneous pneumothorax management,” commented Dharani K. Narendra, MD, of the department of medicine, Baylor College of Medicine, Houston. “It allows clinicians to utilize a ‘wait approach’ versus invasive treatment. Interestingly, recurrence was lower in the observation group.” She said further, in an interview, “In general we assume that if no intervention is done, there is higher chance of recurrence. However, this meta-analysis reveals that is not the case; there is no difference in recurrence of pneumothorax in all groups and fewer complications in the observation group. The invasive treatments such as aspiration or chest tube are risky as they have more complications like pain, bleeding, injury to surrounding structures, etc.”
Neither Dr. Eamer nor Dr. Narendra reported any conflicts of interest. The study was self-funded.
Observation should be considered the first-line treatment of choice in appropriately selected primary spontaneous pneumothorax patients, according to a review comparing observation alone with aspiration or chest tube placement.
Observation was the dominant choice, based on economic modeling showing it to offer both the highest utility and the lowest cost, according to the review, published in CHEST, which encompassed 20 years of relevant publications.
, Gilgamesh Eamer, MD, MSc, FRCSC, of Children’s Hospital of Eastern Ontario, Ottawa, and colleagues wrote. They pointed to recent studies suggesting equivalent or improved outcomes with simple observation in appropriately selected patients. The authors asked, “What management strategy derives the most utility for patients given the cost and morbidity of chest tube placement, hospital admission, surgical intervention and the risk of recurrence of primary spontaneous pneumothorax.”
Primary spontaneous pneumothorax, which leads to progressive pulmonary collapse and respiratory compromise, is thought to be attributable to rupture of air-containing blisters (or bullae) formed under the visceral pleura of the lung, according to the researchers. They stated that, while prior systematic reviews have examined various primary spontaneous pneumothorax management techniques, no reviews encompass more recently published high-quality studies comparing aspiration to other interventions such as observation or Heimlich valve devices.
The authors identified 22 articles for systematic review and meta-analysis after screening an initial list of 5,179 potentially relevant articles (Jan. 1, 2000 to April 10, 2020). They compared observation, needle aspiration, and chest tube placement, and created an economic model for these three treatment pathways based on Canadian medical cost data. The primary outcome measure was resolution following the initial intervention. Secondary outcomes included primary spontaneous pneumothorax recurrence, length of hospital stay, and treatment complications.
The analysis revealed that, compared with observation, chest tube and aspiration had higher resolution without additional intervention (relative risk for chest tube, 0.81; P < .01; RR for aspiration, 0.73; P < .01). Compared with a chest tube, observation and aspiration had shorter length of stay (mean difference for observation, 5.17; P < .01): (MD for aspiration, 2.72; P < .01).
Two-year recurrence rates did not differ between management strategies. Cost utility modeling found a cost of $14,658 (Canadian dollars [CAD] with 1.2535 = 1 US dollar) for chest tube placement, $13,126 CAD for aspiration, and $6,408 CAD for observation.
The utility (a measure including both quantity and quality of life) for each management arm was 0.77 for CT placement, 0.79 for aspiration, and 0.82 for observation. “The observation arm dominates the other two arms meaning it results in a more desirable (higher) utility with lower cost and results in a negative ICER [incremental cost-effectiveness ratio],” the authors stated.
They observed further that it is not typical for a medical intervention to improve patient outcomes, compared with standard care, and at the same time to bring costs down. “Given this, and the increasing evidence that observation is safe and effective in appropriately selected patients presenting with primary spontaneous pneumothorax,” they concluded that “observation should be considered in all patients presenting with primary spontaneous pneumothorax who meet predefined criteria.” They added that, because aspiration is favored over chest tube placement, it should be considered second-line therapy in well-selected primary spontaneous pneumothorax patients presenting with recurrence or who have failed a trial of observation.
“This review sheds light on ‘less is better’ for primary spontaneous pneumothorax management,” commented Dharani K. Narendra, MD, of the department of medicine, Baylor College of Medicine, Houston. “It allows clinicians to utilize a ‘wait approach’ versus invasive treatment. Interestingly, recurrence was lower in the observation group.” She said further, in an interview, “In general we assume that if no intervention is done, there is higher chance of recurrence. However, this meta-analysis reveals that is not the case; there is no difference in recurrence of pneumothorax in all groups and fewer complications in the observation group. The invasive treatments such as aspiration or chest tube are risky as they have more complications like pain, bleeding, injury to surrounding structures, etc.”
Neither Dr. Eamer nor Dr. Narendra reported any conflicts of interest. The study was self-funded.
FROM CHEST