Sleep Medicine

Pregnant women who have even mild sleep apnea should be treated for their sleep-disordered breathing given what is known about associated risks for hypertensive disorders of pregnancy and gestational diabetes, Carolyn M. D’Ambrosio, MS, MD, FCCP, said at the virtual annual meeting of the Associated Professional Sleep Societies.

“This is the current standard of care,” Dr. D’Ambrosio said. “Although guidelines on this issue are not hard and fast, I’d say that knowing what we know about the risk of adverse [maternal] outcomes, we should all try to treat these problems as soon as they’re identified” and then repeat polysomnography or home sleep testing 3-6 months post partum to “be sure the sleep-disordered breathing has resolved.”

Estimates of obstructive sleep apnea (OSA) prevalence range from approximately 9% in the first trimester to 20% in the third trimester. Yet recognizing the significance of OSA in pregnant women and identifying women for testing remains a major challenge. “Most women won’t [report sleep problems] because it’s pretty much common folklore that you don’t sleep well when you’re pregnant,” said Dr. D’Ambrosio, associate professor of medicine at Harvard Medical School, Boston, and current past-chair of the Women’s Lung Health Network for CHEST.

Many obstetricians and obstetrics providers, meanwhile, do not adequately screen. Typical screening tools like the Epworth Sleepiness Scale have low sensitivity and specificity during pregnancy, which means that inquiries about sleepiness, snoring, and disruptions in sleep are important, as is attention to potential risks for OSA posed by obesity, chronic hypertension, and neck circumference.

Only about a quarter of women in the United States snore during pregnancy, she noted. Snoring prevalence does increase as pregnancy progresses, reaching up to almost 50% in during the third trimester in some studies.

A four-variable screening tool reported almost 10 years ago for pregnant women is reliable for gauging risk, Dr. D’Ambrosio said. The model considers self-reported frequent snoring (more than three times/week), chronic hypertension, advanced maternal age, and a pregestational body mass index of at least 30 kg/m². “If these [factors] are present, the patient is at significant risk for OSA and should be strongly considered for testing,” she said.

Home sleep apnea testing (HSAT) is validated for pregnant women but “it can underestimate,” she said. “If you get a negative result and [have clinical suspicion], then don’t stop there.”

And considering that the prevalence of OSA – at all levels of severity – increases as pregnancy progresses, it’s important to continue talking about sleep with patients who have frequent snoring, for instance, but negative sleep test results early in pregnancy. “They could develop [OSA] as time goes on,” she said.
 

Associated risk factors

Independent associations between sleep-disordered breathing and adverse maternal outcomes were demonstrated in a prospective cohort study published several years ago of 3,705 women who underwent HSAT in early and mid-pregnancy. The adjusted odds ratios for preeclampsia when sleep-disordered breathing (an apnea-hypopnea index of ≥5) was present early in pregnancy and in mid-pregnancy were 1.94 and 1.95, respectively.

For hypertensive disorders of pregnancy more broadly, the ORs were 1.46 and 1.73, and for gestational diabetes, the ORs were 3.47 and 2.79.

“Faced with the question about why it’s important to diagnosis and treat OSA [during pregnancy] since the pregnancy will be over in a few months, I go to this study,” Dr. D’Ambrosio said. “Waiting until the end of pregnancy is not safe. There are increased risks of very serious conditions if sleep apnea is there and it’s not treated.”

Another study demonstrating a link between OSA and maternal outcomes looked over 1.5 million deliveries in the United States and found a significantly higher prevalence of gestational diabetes (OR, 2.08), gestational hypertension (OR, 1.77), preeclampsia (OR, 2.07), and eclampsia (OR, 2.70) in pregnant women with OSA than without, after adjusting for maternal obesity. Associations remained significant after adjusting for a more comprehensive list of covariates.

Multiple potential casual pathways are at play, Dr. D’Ambrosio said. Short sleep duration decreases leptin and increases ghrelin levels, for instance, and sleep fragmentation activates the HPA axis and increases cortisol. Intermittent hypoxemia affects sympathetic activity, and intrathoracic pressure swings cause increased oxidative stress and systemic inflammation.

The resulting endothelial dysfunction, glucose dysfunction, and dyslipidemia can drive the adverse maternal outcomes documented in these studies, she said, noting that the adverse outcomes can have long-term cardiovascular consequences.

Continuous positive airway pressure therapy is well tolerated in pregnancy, and given pregnancy’s continual weight change, auto-titrating CPAP may be the best option, she said.

There is “some limited data that treatment improves maternal outcomes, and we’re still working on trying to get better data and more solid recommendations,” Dr. D’Ambrosio said. There currently are no guidelines covering the diagnosis and management of OSA during pregnancy.

“We’ve come a long way ... but we still have more to do,” she said. “We have a long way to go to getting [OSA in pregnant women] well recognized, with screening techniques and diagnosis.”

Asked after the meeting about Dr. D’Ambrosio’s messages, Anita Rajagopal, MD, said that OSA screening during pregnancy needs to be improved through more collaboration “with our ob.gyn. and primary care colleagues.”

Too often, she said, “the signs and symptoms of OSA in pregnancy are written off as ‘just harmless snoring’ while in fact the patient has treatable sleep disordered breathing with potential adverse effects.” Dr. Rajagopal is department medical director for sleep medicine at Community Physician Network and medical director of the Community Health Network Sleep-Wake Disorders Center, both in Indianapolis.

Dr. D’Ambrosio reported that she has no potential conflicts of interest related to the material she presented, and Dr. Rajagopal stated she has no potential conflicts of interest.

Pregnant women who have even mild sleep apnea should be treated for their sleep-disordered breathing given what is known about associated risks for hypertensive disorders of pregnancy and gestational diabetes, Carolyn M. D’Ambrosio, MS, MD, FCCP, said at the virtual annual meeting of the Associated Professional Sleep Societies.

“This is the current standard of care,” Dr. D’Ambrosio said. “Although guidelines on this issue are not hard and fast, I’d say that knowing what we know about the risk of adverse [maternal] outcomes, we should all try to treat these problems as soon as they’re identified” and then repeat polysomnography or home sleep testing 3-6 months post partum to “be sure the sleep-disordered breathing has resolved.”

Estimates of obstructive sleep apnea (OSA) prevalence range from approximately 9% in the first trimester to 20% in the third trimester. Yet recognizing the significance of OSA in pregnant women and identifying women for testing remains a major challenge. “Most women won’t [report sleep problems] because it’s pretty much common folklore that you don’t sleep well when you’re pregnant,” said Dr. D’Ambrosio, associate professor of medicine at Harvard Medical School, Boston, and current past-chair of the Women’s Lung Health Network for CHEST.

Many obstetricians and obstetrics providers, meanwhile, do not adequately screen. Typical screening tools like the Epworth Sleepiness Scale have low sensitivity and specificity during pregnancy, which means that inquiries about sleepiness, snoring, and disruptions in sleep are important, as is attention to potential risks for OSA posed by obesity, chronic hypertension, and neck circumference.

Only about a quarter of women in the United States snore during pregnancy, she noted. Snoring prevalence does increase as pregnancy progresses, reaching up to almost 50% in during the third trimester in some studies.

A four-variable screening tool reported almost 10 years ago for pregnant women is reliable for gauging risk, Dr. D’Ambrosio said. The model considers self-reported frequent snoring (more than three times/week), chronic hypertension, advanced maternal age, and a pregestational body mass index of at least 30 kg/m². “If these [factors] are present, the patient is at significant risk for OSA and should be strongly considered for testing,” she said.

Home sleep apnea testing (HSAT) is validated for pregnant women but “it can underestimate,” she said. “If you get a negative result and [have clinical suspicion], then don’t stop there.”

And considering that the prevalence of OSA – at all levels of severity – increases as pregnancy progresses, it’s important to continue talking about sleep with patients who have frequent snoring, for instance, but negative sleep test results early in pregnancy. “They could develop [OSA] as time goes on,” she said.
 

Associated risk factors

Independent associations between sleep-disordered breathing and adverse maternal outcomes were demonstrated in a prospective cohort study published several years ago of 3,705 women who underwent HSAT in early and mid-pregnancy. The adjusted odds ratios for preeclampsia when sleep-disordered breathing (an apnea-hypopnea index of ≥5) was present early in pregnancy and in mid-pregnancy were 1.94 and 1.95, respectively.

For hypertensive disorders of pregnancy more broadly, the ORs were 1.46 and 1.73, and for gestational diabetes, the ORs were 3.47 and 2.79.

“Faced with the question about why it’s important to diagnosis and treat OSA [during pregnancy] since the pregnancy will be over in a few months, I go to this study,” Dr. D’Ambrosio said. “Waiting until the end of pregnancy is not safe. There are increased risks of very serious conditions if sleep apnea is there and it’s not treated.”

Another study demonstrating a link between OSA and maternal outcomes looked over 1.5 million deliveries in the United States and found a significantly higher prevalence of gestational diabetes (OR, 2.08), gestational hypertension (OR, 1.77), preeclampsia (OR, 2.07), and eclampsia (OR, 2.70) in pregnant women with OSA than without, after adjusting for maternal obesity. Associations remained significant after adjusting for a more comprehensive list of covariates.

Multiple potential casual pathways are at play, Dr. D’Ambrosio said. Short sleep duration decreases leptin and increases ghrelin levels, for instance, and sleep fragmentation activates the HPA axis and increases cortisol. Intermittent hypoxemia affects sympathetic activity, and intrathoracic pressure swings cause increased oxidative stress and systemic inflammation.

The resulting endothelial dysfunction, glucose dysfunction, and dyslipidemia can drive the adverse maternal outcomes documented in these studies, she said, noting that the adverse outcomes can have long-term cardiovascular consequences.

Continuous positive airway pressure therapy is well tolerated in pregnancy, and given pregnancy’s continual weight change, auto-titrating CPAP may be the best option, she said.

There is “some limited data that treatment improves maternal outcomes, and we’re still working on trying to get better data and more solid recommendations,” Dr. D’Ambrosio said. There currently are no guidelines covering the diagnosis and management of OSA during pregnancy.

“We’ve come a long way ... but we still have more to do,” she said. “We have a long way to go to getting [OSA in pregnant women] well recognized, with screening techniques and diagnosis.”

Asked after the meeting about Dr. D’Ambrosio’s messages, Anita Rajagopal, MD, said that OSA screening during pregnancy needs to be improved through more collaboration “with our ob.gyn. and primary care colleagues.”

Too often, she said, “the signs and symptoms of OSA in pregnancy are written off as ‘just harmless snoring’ while in fact the patient has treatable sleep disordered breathing with potential adverse effects.” Dr. Rajagopal is department medical director for sleep medicine at Community Physician Network and medical director of the Community Health Network Sleep-Wake Disorders Center, both in Indianapolis.

Dr. D’Ambrosio reported that she has no potential conflicts of interest related to the material she presented, and Dr. Rajagopal stated she has no potential conflicts of interest.

Pregnant women who have even mild sleep apnea should be treated for their sleep-disordered breathing given what is known about associated risks for hypertensive disorders of pregnancy and gestational diabetes, Carolyn M. D’Ambrosio, MS, MD, FCCP, said at the virtual annual meeting of the Associated Professional Sleep Societies.

“This is the current standard of care,” Dr. D’Ambrosio said. “Although guidelines on this issue are not hard and fast, I’d say that knowing what we know about the risk of adverse [maternal] outcomes, we should all try to treat these problems as soon as they’re identified” and then repeat polysomnography or home sleep testing 3-6 months post partum to “be sure the sleep-disordered breathing has resolved.”

Estimates of obstructive sleep apnea (OSA) prevalence range from approximately 9% in the first trimester to 20% in the third trimester. Yet recognizing the significance of OSA in pregnant women and identifying women for testing remains a major challenge. “Most women won’t [report sleep problems] because it’s pretty much common folklore that you don’t sleep well when you’re pregnant,” said Dr. D’Ambrosio, associate professor of medicine at Harvard Medical School, Boston, and current past-chair of the Women’s Lung Health Network for CHEST.

Many obstetricians and obstetrics providers, meanwhile, do not adequately screen. Typical screening tools like the Epworth Sleepiness Scale have low sensitivity and specificity during pregnancy, which means that inquiries about sleepiness, snoring, and disruptions in sleep are important, as is attention to potential risks for OSA posed by obesity, chronic hypertension, and neck circumference.

Only about a quarter of women in the United States snore during pregnancy, she noted. Snoring prevalence does increase as pregnancy progresses, reaching up to almost 50% in during the third trimester in some studies.

A four-variable screening tool reported almost 10 years ago for pregnant women is reliable for gauging risk, Dr. D’Ambrosio said. The model considers self-reported frequent snoring (more than three times/week), chronic hypertension, advanced maternal age, and a pregestational body mass index of at least 30 kg/m². “If these [factors] are present, the patient is at significant risk for OSA and should be strongly considered for testing,” she said.

Home sleep apnea testing (HSAT) is validated for pregnant women but “it can underestimate,” she said. “If you get a negative result and [have clinical suspicion], then don’t stop there.”

And considering that the prevalence of OSA – at all levels of severity – increases as pregnancy progresses, it’s important to continue talking about sleep with patients who have frequent snoring, for instance, but negative sleep test results early in pregnancy. “They could develop [OSA] as time goes on,” she said.
 

Associated risk factors

Independent associations between sleep-disordered breathing and adverse maternal outcomes were demonstrated in a prospective cohort study published several years ago of 3,705 women who underwent HSAT in early and mid-pregnancy. The adjusted odds ratios for preeclampsia when sleep-disordered breathing (an apnea-hypopnea index of ≥5) was present early in pregnancy and in mid-pregnancy were 1.94 and 1.95, respectively.

For hypertensive disorders of pregnancy more broadly, the ORs were 1.46 and 1.73, and for gestational diabetes, the ORs were 3.47 and 2.79.

“Faced with the question about why it’s important to diagnosis and treat OSA [during pregnancy] since the pregnancy will be over in a few months, I go to this study,” Dr. D’Ambrosio said. “Waiting until the end of pregnancy is not safe. There are increased risks of very serious conditions if sleep apnea is there and it’s not treated.”

Another study demonstrating a link between OSA and maternal outcomes looked over 1.5 million deliveries in the United States and found a significantly higher prevalence of gestational diabetes (OR, 2.08), gestational hypertension (OR, 1.77), preeclampsia (OR, 2.07), and eclampsia (OR, 2.70) in pregnant women with OSA than without, after adjusting for maternal obesity. Associations remained significant after adjusting for a more comprehensive list of covariates.

Multiple potential casual pathways are at play, Dr. D’Ambrosio said. Short sleep duration decreases leptin and increases ghrelin levels, for instance, and sleep fragmentation activates the HPA axis and increases cortisol. Intermittent hypoxemia affects sympathetic activity, and intrathoracic pressure swings cause increased oxidative stress and systemic inflammation.

The resulting endothelial dysfunction, glucose dysfunction, and dyslipidemia can drive the adverse maternal outcomes documented in these studies, she said, noting that the adverse outcomes can have long-term cardiovascular consequences.

Continuous positive airway pressure therapy is well tolerated in pregnancy, and given pregnancy’s continual weight change, auto-titrating CPAP may be the best option, she said.

There is “some limited data that treatment improves maternal outcomes, and we’re still working on trying to get better data and more solid recommendations,” Dr. D’Ambrosio said. There currently are no guidelines covering the diagnosis and management of OSA during pregnancy.

“We’ve come a long way ... but we still have more to do,” she said. “We have a long way to go to getting [OSA in pregnant women] well recognized, with screening techniques and diagnosis.”

Asked after the meeting about Dr. D’Ambrosio’s messages, Anita Rajagopal, MD, said that OSA screening during pregnancy needs to be improved through more collaboration “with our ob.gyn. and primary care colleagues.”

Too often, she said, “the signs and symptoms of OSA in pregnancy are written off as ‘just harmless snoring’ while in fact the patient has treatable sleep disordered breathing with potential adverse effects.” Dr. Rajagopal is department medical director for sleep medicine at Community Physician Network and medical director of the Community Health Network Sleep-Wake Disorders Center, both in Indianapolis.

Dr. D’Ambrosio reported that she has no potential conflicts of interest related to the material she presented, and Dr. Rajagopal stated she has no potential conflicts of interest.

Obesity hypoventilation syndrome (OHS) is bound to be increasing because of the rising obesity epidemic but is underrecognized and “frequently underdiagnosed,” Saiprakash B. Venkateshiah, MD, said at the virtual annual meeting of the Associated Professional Sleep Societies.

The condition, which can cause significant morbidity and mortality, is defined by the combination of obesity and awake alveolar hypoventilation (PaCO₂ ≥45 mm Hg), with the exclusion of alternate causes of hypoventilation. Sleep-disordered breathing (SDB) is almost universally present, with approximately 90% of individuals with OHS also having obstructive sleep apnea (OSA), most often severe, and approximately 10% having sleep-related hypoventilation, or a “pure hypoventilation subtype, if you will,” said Dr. Venkateshiah, assistant professor of medicine at Emory University, Atlanta.

The prevalence of OHS in the general population is unknown, but its prevalence in patients who present for the evaluation of SDB has ranged from 8%-20% across multiple studies, he said. Up to 40% of patients with OHS present for the first time with acute hypercapnic respiratory failure, which has an in-hospital mortality of 18%.

Postmenopausal women appear to have a higher prevalence, compared with premenopausal women and men, he noted, and women appear to be more likely than men to present with the clinical phenotype of OHS without associated OSA.

The arterial blood gas measurement needed to document alveolar hypoventilation and definitively diagnosis OHA is a “simple and economical test,” he said, “but it is logistically very difficult to obtain [these measurements] routinely in all patients in the clinic ... and is one of the reasons why OSH is underdiagnosed.”
 

Guideline advice

A practice guideline published in 2019 by the American Thoracic Society suggests that, for obese patients with SDB and a low to moderate probability of having OSH, a serum bicarbonate level be measured first. “In patients with serum bicarbonate less than 27 mmol/L, clinicians might forgo measuring PaCO₂, as the diagnosis in them is very unlikely,” Dr. Venkateshiah said, referring to the guideline. “In patients with a serum bicarbonate greater than 27, you might need to measure PaCO₂ to confirm or rule out the diagnosis of OHS.”

(Patients strongly suspected of having OHS, with more than a low to moderate probability – those in whom arterial blood gases should be measured – are “usually severely obese with typical signs and symptoms such as dyspnea, nocturia, lower-extremity edema, excessive daytime sleepiness, fatigue, loud disruptive snoring, witnessed apneas, as well as mild hypoxemia during wake and/or significant hypoxemia during sleep,” the ATS guideline says.)

The guideline panel considered the use of oxygen saturation measured with pulse oximetry during wakefulness to screen for OHS and decided to advise against it because of the paucity of evidence-based literature, Dr. Venkateshiah noted. (In making its five conditional recommendations, the guideline panel cited an overall very low quality of evidence.)

Symptoms of OHS overlap with those of OSA (for example, daytime hypersomnolence, witnessed apneas, loud snoring, and morning headaches), so “symptoms alone cannot be used to discriminate between the two disorders,” he advised. Signs of OHS commonly seen in clinical exams, however, are low resting daytime oxygen saturations and lower-extremity edema. A sleep study, he added, is needed to document and characterize SDB in patients with OHS.

Positive airway pressure therapy is the first-line treatment for OHS, and long-term outcomes of patients with OHS on PAP treatment are significantly better, compared with untreated individuals. There is no strong evidence to recommend one form of PAP therapy over another for patients with OHS and concomitant severe OSA, he said, but “the bottom line” from both short- and long-term randomized clinical trials comparing CPAP with noninvasive ventilation “is that CPAP is equivalent to noninvasive ventilation as far as outcomes are concerned.”

The ATS guideline panel recommends continuous positive airway pressure therapy for patients with OHS and severe OSA. And for OHS with nonsevere OSA, bilevel PAP is traditionally used – including pure hypoventilators, Dr. Venkateshiah said.

Weight-loss interventions are paramount, since “the primary driver of OHS is obesity,” he said at the meeting. There are only a few studies that have looked at bariatric surgery in patients with OHS, he said, “but they did note significant improvements in gas exchange, sleep apnea, lung volumes and pulmonary hypertension.”

The ATS guideline suggests weight-loss interventions that produce sustained weight loss of 25%-30% of the actual body weight. Such interventions are “most likely required to achieve resolution of hypoventilation,” Dr. Venkateshiah said.
 

OHS vs. COPD

In a separate presentation on OHS, Michelle Cao, DO, clinical associate professor at Stanford (Calif.) University, emphasized the importance of distinguishing the patient with OHS from the patient with hypercapnic chronic obstructive pulmonary disease (COPD). Spirometry and the flow volume curve can help rule out hypercapnic COPD and other conditions that cause daytime hypoventilation.

A study published in 2016 of 600 hospitalized patients determined to have unequivocal OHS found that 43% had been misdiagnosed as having COPD and none had been previously diagnosed with OHS, Dr. Cao noted. Patients in the study had a mean age of 58 and a mean body mass index of 48.2 kg/m²; 64% were women.

Dr. Venkateshiah and Dr. Cao had no relevant disclosures.

Obesity hypoventilation syndrome (OHS) is bound to be increasing because of the rising obesity epidemic but is underrecognized and “frequently underdiagnosed,” Saiprakash B. Venkateshiah, MD, said at the virtual annual meeting of the Associated Professional Sleep Societies.

The condition, which can cause significant morbidity and mortality, is defined by the combination of obesity and awake alveolar hypoventilation (PaCO₂ ≥45 mm Hg), with the exclusion of alternate causes of hypoventilation. Sleep-disordered breathing (SDB) is almost universally present, with approximately 90% of individuals with OHS also having obstructive sleep apnea (OSA), most often severe, and approximately 10% having sleep-related hypoventilation, or a “pure hypoventilation subtype, if you will,” said Dr. Venkateshiah, assistant professor of medicine at Emory University, Atlanta.

The prevalence of OHS in the general population is unknown, but its prevalence in patients who present for the evaluation of SDB has ranged from 8%-20% across multiple studies, he said. Up to 40% of patients with OHS present for the first time with acute hypercapnic respiratory failure, which has an in-hospital mortality of 18%.

Postmenopausal women appear to have a higher prevalence, compared with premenopausal women and men, he noted, and women appear to be more likely than men to present with the clinical phenotype of OHS without associated OSA.

The arterial blood gas measurement needed to document alveolar hypoventilation and definitively diagnosis OHA is a “simple and economical test,” he said, “but it is logistically very difficult to obtain [these measurements] routinely in all patients in the clinic ... and is one of the reasons why OSH is underdiagnosed.”
 

Guideline advice

A practice guideline published in 2019 by the American Thoracic Society suggests that, for obese patients with SDB and a low to moderate probability of having OSH, a serum bicarbonate level be measured first. “In patients with serum bicarbonate less than 27 mmol/L, clinicians might forgo measuring PaCO₂, as the diagnosis in them is very unlikely,” Dr. Venkateshiah said, referring to the guideline. “In patients with a serum bicarbonate greater than 27, you might need to measure PaCO₂ to confirm or rule out the diagnosis of OHS.”

(Patients strongly suspected of having OHS, with more than a low to moderate probability – those in whom arterial blood gases should be measured – are “usually severely obese with typical signs and symptoms such as dyspnea, nocturia, lower-extremity edema, excessive daytime sleepiness, fatigue, loud disruptive snoring, witnessed apneas, as well as mild hypoxemia during wake and/or significant hypoxemia during sleep,” the ATS guideline says.)

The guideline panel considered the use of oxygen saturation measured with pulse oximetry during wakefulness to screen for OHS and decided to advise against it because of the paucity of evidence-based literature, Dr. Venkateshiah noted. (In making its five conditional recommendations, the guideline panel cited an overall very low quality of evidence.)

Symptoms of OHS overlap with those of OSA (for example, daytime hypersomnolence, witnessed apneas, loud snoring, and morning headaches), so “symptoms alone cannot be used to discriminate between the two disorders,” he advised. Signs of OHS commonly seen in clinical exams, however, are low resting daytime oxygen saturations and lower-extremity edema. A sleep study, he added, is needed to document and characterize SDB in patients with OHS.

Positive airway pressure therapy is the first-line treatment for OHS, and long-term outcomes of patients with OHS on PAP treatment are significantly better, compared with untreated individuals. There is no strong evidence to recommend one form of PAP therapy over another for patients with OHS and concomitant severe OSA, he said, but “the bottom line” from both short- and long-term randomized clinical trials comparing CPAP with noninvasive ventilation “is that CPAP is equivalent to noninvasive ventilation as far as outcomes are concerned.”

The ATS guideline panel recommends continuous positive airway pressure therapy for patients with OHS and severe OSA. And for OHS with nonsevere OSA, bilevel PAP is traditionally used – including pure hypoventilators, Dr. Venkateshiah said.

Weight-loss interventions are paramount, since “the primary driver of OHS is obesity,” he said at the meeting. There are only a few studies that have looked at bariatric surgery in patients with OHS, he said, “but they did note significant improvements in gas exchange, sleep apnea, lung volumes and pulmonary hypertension.”

The ATS guideline suggests weight-loss interventions that produce sustained weight loss of 25%-30% of the actual body weight. Such interventions are “most likely required to achieve resolution of hypoventilation,” Dr. Venkateshiah said.
 

OHS vs. COPD

In a separate presentation on OHS, Michelle Cao, DO, clinical associate professor at Stanford (Calif.) University, emphasized the importance of distinguishing the patient with OHS from the patient with hypercapnic chronic obstructive pulmonary disease (COPD). Spirometry and the flow volume curve can help rule out hypercapnic COPD and other conditions that cause daytime hypoventilation.

A study published in 2016 of 600 hospitalized patients determined to have unequivocal OHS found that 43% had been misdiagnosed as having COPD and none had been previously diagnosed with OHS, Dr. Cao noted. Patients in the study had a mean age of 58 and a mean body mass index of 48.2 kg/m²; 64% were women.

Dr. Venkateshiah and Dr. Cao had no relevant disclosures.

Obesity hypoventilation syndrome (OHS) is bound to be increasing because of the rising obesity epidemic but is underrecognized and “frequently underdiagnosed,” Saiprakash B. Venkateshiah, MD, said at the virtual annual meeting of the Associated Professional Sleep Societies.

The condition, which can cause significant morbidity and mortality, is defined by the combination of obesity and awake alveolar hypoventilation (PaCO₂ ≥45 mm Hg), with the exclusion of alternate causes of hypoventilation. Sleep-disordered breathing (SDB) is almost universally present, with approximately 90% of individuals with OHS also having obstructive sleep apnea (OSA), most often severe, and approximately 10% having sleep-related hypoventilation, or a “pure hypoventilation subtype, if you will,” said Dr. Venkateshiah, assistant professor of medicine at Emory University, Atlanta.

The prevalence of OHS in the general population is unknown, but its prevalence in patients who present for the evaluation of SDB has ranged from 8%-20% across multiple studies, he said. Up to 40% of patients with OHS present for the first time with acute hypercapnic respiratory failure, which has an in-hospital mortality of 18%.

Postmenopausal women appear to have a higher prevalence, compared with premenopausal women and men, he noted, and women appear to be more likely than men to present with the clinical phenotype of OHS without associated OSA.

The arterial blood gas measurement needed to document alveolar hypoventilation and definitively diagnosis OHA is a “simple and economical test,” he said, “but it is logistically very difficult to obtain [these measurements] routinely in all patients in the clinic ... and is one of the reasons why OSH is underdiagnosed.”
 

Guideline advice

A practice guideline published in 2019 by the American Thoracic Society suggests that, for obese patients with SDB and a low to moderate probability of having OSH, a serum bicarbonate level be measured first. “In patients with serum bicarbonate less than 27 mmol/L, clinicians might forgo measuring PaCO₂, as the diagnosis in them is very unlikely,” Dr. Venkateshiah said, referring to the guideline. “In patients with a serum bicarbonate greater than 27, you might need to measure PaCO₂ to confirm or rule out the diagnosis of OHS.”

(Patients strongly suspected of having OHS, with more than a low to moderate probability – those in whom arterial blood gases should be measured – are “usually severely obese with typical signs and symptoms such as dyspnea, nocturia, lower-extremity edema, excessive daytime sleepiness, fatigue, loud disruptive snoring, witnessed apneas, as well as mild hypoxemia during wake and/or significant hypoxemia during sleep,” the ATS guideline says.)

The guideline panel considered the use of oxygen saturation measured with pulse oximetry during wakefulness to screen for OHS and decided to advise against it because of the paucity of evidence-based literature, Dr. Venkateshiah noted. (In making its five conditional recommendations, the guideline panel cited an overall very low quality of evidence.)

Symptoms of OHS overlap with those of OSA (for example, daytime hypersomnolence, witnessed apneas, loud snoring, and morning headaches), so “symptoms alone cannot be used to discriminate between the two disorders,” he advised. Signs of OHS commonly seen in clinical exams, however, are low resting daytime oxygen saturations and lower-extremity edema. A sleep study, he added, is needed to document and characterize SDB in patients with OHS.

Positive airway pressure therapy is the first-line treatment for OHS, and long-term outcomes of patients with OHS on PAP treatment are significantly better, compared with untreated individuals. There is no strong evidence to recommend one form of PAP therapy over another for patients with OHS and concomitant severe OSA, he said, but “the bottom line” from both short- and long-term randomized clinical trials comparing CPAP with noninvasive ventilation “is that CPAP is equivalent to noninvasive ventilation as far as outcomes are concerned.”

The ATS guideline panel recommends continuous positive airway pressure therapy for patients with OHS and severe OSA. And for OHS with nonsevere OSA, bilevel PAP is traditionally used – including pure hypoventilators, Dr. Venkateshiah said.

Weight-loss interventions are paramount, since “the primary driver of OHS is obesity,” he said at the meeting. There are only a few studies that have looked at bariatric surgery in patients with OHS, he said, “but they did note significant improvements in gas exchange, sleep apnea, lung volumes and pulmonary hypertension.”

The ATS guideline suggests weight-loss interventions that produce sustained weight loss of 25%-30% of the actual body weight. Such interventions are “most likely required to achieve resolution of hypoventilation,” Dr. Venkateshiah said.
 

OHS vs. COPD

In a separate presentation on OHS, Michelle Cao, DO, clinical associate professor at Stanford (Calif.) University, emphasized the importance of distinguishing the patient with OHS from the patient with hypercapnic chronic obstructive pulmonary disease (COPD). Spirometry and the flow volume curve can help rule out hypercapnic COPD and other conditions that cause daytime hypoventilation.

A study published in 2016 of 600 hospitalized patients determined to have unequivocal OHS found that 43% had been misdiagnosed as having COPD and none had been previously diagnosed with OHS, Dr. Cao noted. Patients in the study had a mean age of 58 and a mean body mass index of 48.2 kg/m²; 64% were women.

Dr. Venkateshiah and Dr. Cao had no relevant disclosures.

A single, simple question about sleep habits asked to people with diabetes in the UK Biobank database identified a subgroup with a nearly doubled mortality rate during almost 9 years of follow-up: those who said they usually had sleep disturbances.

The question was: Do you never, rarely, sometimes, or usually have trouble falling asleep, or waking in the middle of the night?

Adults in the UK Biobank with any form of self-reported diabetes or insulin use who answered that they usually have sleep disturbances had a significant 87% higher mortality rate than did those without diabetes who said they never or rarely had sleep disturbances, in a fully adjusted model with an average follow-up of 8.9 years, Kristen L. Knutson, PhD, and coauthors reported in the Journal of Sleep Research.

Mortality was 11% higher in respondents who reported frequent sleep disturbances but had no diabetes than in those without frequent sleep disturbances. Furthermore, those with diabetes but without frequent sleep disturbances had a 67% higher mortality rate, compared with those without diabetes. Both differences were statistically significant in a model that adjusted for age, sex, ethnicity, smoking, sleep duration, body mass index, and other covariates.

The findings suggest that diabetes and frequent sleep disturbances act in a roughly additive way to raise mortality risk, said Dr. Knutson, an epidemiologist and neurologist who specializes in sleep medicine at Northwestern University, Chicago.

She suggested that, based on these findings, clinicians should consider annually asking patients with diabetes this key question about the frequency of their sleep disturbances. They should then follow up with patients who report usual disturbances by referring them to a sleep clinic to test for a sleep disorders such as insomnia or sleep apnea. Sleep apnea especially is “particularly common in patients with type 2 diabetes,” Dr. Knutson noted in an interview.
 

A need to ‘spread awareness’ about diabetes and disturbed sleep.

The study run by Dr. Knutson and associates “is one of the largest population-based studies” to examine the relationship between sleep disturbances, diabetes, and mortality, commented Sirimon Reutrakul, MD, an endocrinologist and diabetes specialist at the University of Illinois Hospital in Chicago.

“This study highlights the detrimental effects of sleep disturbances in people with or without diabetes, and adds to the effects of sleep disturbances such as insomnia symptoms. People with diabetes often have sleep disturbances. Obstructive sleep apnea is very common in people with diabetes, and insomnia symptoms could be present in people with obstructive sleep apnea or it could be a separate problem,” Dr. Reutrakul said in an interview. Sleep disturbances can arise from direct effects of diabetes, such as nocturia, worry about glucose levels, pain, depressive symptoms, and anxiety, or can result from comorbidities that interfere with sleep.

“It is prudent to ask patients with diabetes about sleep patterns,” said Dr. Reutrakul, and she endorsed the specific question that Dr. Knutson recommended asking patients. Other aspects of sleep quality that could be helpful for a diagnosis include sleep duration, sleep timing, and snoring. “Some physicians ask these questions, but we need to spread awareness,” she added.

Prior to referring patients to a sleep clinic, Dr. Reutrakul suggested that clinicians could also assess possible triggers such as inadequate glucose control, pain, and anxiety, and they could also recommend good sleep hygiene strategies such as what’s recommended by the Sleep Foundation.
 

Sleep disturbances ‘highly prevalent’ among U.K. adults.

The UK Biobank enrolled just over 500,000 people aged 37-73 years during 2006-2010, and 487,728 of these people had data available that allowed their inclusion in the analysis. That group averaged about 57 years of age, 54% were women, 94% were White, and their average body mass index was 27-28 kg/m2.

More than a quarter of these people reported having “usual” sleep disturbances, showing that sleep disturbances are “highly prevalent” among U.K. residents, noted the authors. Just under a quarter of the subjects reported they never or rarely had sleep disturbances, and the remaining half of subjects said they “sometimes” had sleep disturbances.

In addition, 69% reported neither diabetes nor frequent sleep disturbances, 26% had frequent sleep disturbances but no diabetes, 3% had diabetes but not frequent sleep disturbances, and 2% had both diabetes and frequent sleep disturbances.

During the average 8.9-year follow-up, 19,177 people died from any cause (4%), and 3,874 of these deaths involved cardiovascular disease causes. Despite the significant association of diabetes and frequent sleep disturbances with an increased rate of all-cause mortality, the same combination showed no significant link with cardiovascular mortality in the study’s full-adjusted model. This may be because “frequent sleep disturbances can lead to a variety of causes of death,” Dr. Knutson suggested.

The information collected by the UK Biobank did not allow the researchers to distinguish between type 1 and type 2 diabetes.

The findings “suggest that regardless of the cause of sleep disturbance, reporting sleep disturbances on a frequent basis is an important signal of elevated risk of mortality. Such symptoms should therefore be investigated further by physicians, particularly in patients who have also been diagnosed with diabetes,” wrote Dr. Knutson and coauthors. “This is the first study to examine the effect of the combination of insomnia and diabetes on mortality risk.”

But Dr. Knutson highlighted that “sleep problems are important for everyone, not just people with diabetes.

Neither Dr. Knutson and coauthors nor Dr. Reutrakul had no disclosures.

[email protected]

A single, simple question about sleep habits asked to people with diabetes in the UK Biobank database identified a subgroup with a nearly doubled mortality rate during almost 9 years of follow-up: those who said they usually had sleep disturbances.

The question was: Do you never, rarely, sometimes, or usually have trouble falling asleep, or waking in the middle of the night?

Adults in the UK Biobank with any form of self-reported diabetes or insulin use who answered that they usually have sleep disturbances had a significant 87% higher mortality rate than did those without diabetes who said they never or rarely had sleep disturbances, in a fully adjusted model with an average follow-up of 8.9 years, Kristen L. Knutson, PhD, and coauthors reported in the Journal of Sleep Research.

Mortality was 11% higher in respondents who reported frequent sleep disturbances but had no diabetes than in those without frequent sleep disturbances. Furthermore, those with diabetes but without frequent sleep disturbances had a 67% higher mortality rate, compared with those without diabetes. Both differences were statistically significant in a model that adjusted for age, sex, ethnicity, smoking, sleep duration, body mass index, and other covariates.

The findings suggest that diabetes and frequent sleep disturbances act in a roughly additive way to raise mortality risk, said Dr. Knutson, an epidemiologist and neurologist who specializes in sleep medicine at Northwestern University, Chicago.

She suggested that, based on these findings, clinicians should consider annually asking patients with diabetes this key question about the frequency of their sleep disturbances. They should then follow up with patients who report usual disturbances by referring them to a sleep clinic to test for a sleep disorders such as insomnia or sleep apnea. Sleep apnea especially is “particularly common in patients with type 2 diabetes,” Dr. Knutson noted in an interview.
 

A need to ‘spread awareness’ about diabetes and disturbed sleep.

The study run by Dr. Knutson and associates “is one of the largest population-based studies” to examine the relationship between sleep disturbances, diabetes, and mortality, commented Sirimon Reutrakul, MD, an endocrinologist and diabetes specialist at the University of Illinois Hospital in Chicago.

“This study highlights the detrimental effects of sleep disturbances in people with or without diabetes, and adds to the effects of sleep disturbances such as insomnia symptoms. People with diabetes often have sleep disturbances. Obstructive sleep apnea is very common in people with diabetes, and insomnia symptoms could be present in people with obstructive sleep apnea or it could be a separate problem,” Dr. Reutrakul said in an interview. Sleep disturbances can arise from direct effects of diabetes, such as nocturia, worry about glucose levels, pain, depressive symptoms, and anxiety, or can result from comorbidities that interfere with sleep.

“It is prudent to ask patients with diabetes about sleep patterns,” said Dr. Reutrakul, and she endorsed the specific question that Dr. Knutson recommended asking patients. Other aspects of sleep quality that could be helpful for a diagnosis include sleep duration, sleep timing, and snoring. “Some physicians ask these questions, but we need to spread awareness,” she added.

Prior to referring patients to a sleep clinic, Dr. Reutrakul suggested that clinicians could also assess possible triggers such as inadequate glucose control, pain, and anxiety, and they could also recommend good sleep hygiene strategies such as what’s recommended by the Sleep Foundation.
 

Sleep disturbances ‘highly prevalent’ among U.K. adults.

The UK Biobank enrolled just over 500,000 people aged 37-73 years during 2006-2010, and 487,728 of these people had data available that allowed their inclusion in the analysis. That group averaged about 57 years of age, 54% were women, 94% were White, and their average body mass index was 27-28 kg/m2.

More than a quarter of these people reported having “usual” sleep disturbances, showing that sleep disturbances are “highly prevalent” among U.K. residents, noted the authors. Just under a quarter of the subjects reported they never or rarely had sleep disturbances, and the remaining half of subjects said they “sometimes” had sleep disturbances.

In addition, 69% reported neither diabetes nor frequent sleep disturbances, 26% had frequent sleep disturbances but no diabetes, 3% had diabetes but not frequent sleep disturbances, and 2% had both diabetes and frequent sleep disturbances.

During the average 8.9-year follow-up, 19,177 people died from any cause (4%), and 3,874 of these deaths involved cardiovascular disease causes. Despite the significant association of diabetes and frequent sleep disturbances with an increased rate of all-cause mortality, the same combination showed no significant link with cardiovascular mortality in the study’s full-adjusted model. This may be because “frequent sleep disturbances can lead to a variety of causes of death,” Dr. Knutson suggested.

The information collected by the UK Biobank did not allow the researchers to distinguish between type 1 and type 2 diabetes.

The findings “suggest that regardless of the cause of sleep disturbance, reporting sleep disturbances on a frequent basis is an important signal of elevated risk of mortality. Such symptoms should therefore be investigated further by physicians, particularly in patients who have also been diagnosed with diabetes,” wrote Dr. Knutson and coauthors. “This is the first study to examine the effect of the combination of insomnia and diabetes on mortality risk.”

But Dr. Knutson highlighted that “sleep problems are important for everyone, not just people with diabetes.

Neither Dr. Knutson and coauthors nor Dr. Reutrakul had no disclosures.

[email protected]

A single, simple question about sleep habits asked to people with diabetes in the UK Biobank database identified a subgroup with a nearly doubled mortality rate during almost 9 years of follow-up: those who said they usually had sleep disturbances.

The question was: Do you never, rarely, sometimes, or usually have trouble falling asleep, or waking in the middle of the night?

Adults in the UK Biobank with any form of self-reported diabetes or insulin use who answered that they usually have sleep disturbances had a significant 87% higher mortality rate than did those without diabetes who said they never or rarely had sleep disturbances, in a fully adjusted model with an average follow-up of 8.9 years, Kristen L. Knutson, PhD, and coauthors reported in the Journal of Sleep Research.

Mortality was 11% higher in respondents who reported frequent sleep disturbances but had no diabetes than in those without frequent sleep disturbances. Furthermore, those with diabetes but without frequent sleep disturbances had a 67% higher mortality rate, compared with those without diabetes. Both differences were statistically significant in a model that adjusted for age, sex, ethnicity, smoking, sleep duration, body mass index, and other covariates.

The findings suggest that diabetes and frequent sleep disturbances act in a roughly additive way to raise mortality risk, said Dr. Knutson, an epidemiologist and neurologist who specializes in sleep medicine at Northwestern University, Chicago.

She suggested that, based on these findings, clinicians should consider annually asking patients with diabetes this key question about the frequency of their sleep disturbances. They should then follow up with patients who report usual disturbances by referring them to a sleep clinic to test for a sleep disorders such as insomnia or sleep apnea. Sleep apnea especially is “particularly common in patients with type 2 diabetes,” Dr. Knutson noted in an interview.
 

A need to ‘spread awareness’ about diabetes and disturbed sleep.

The study run by Dr. Knutson and associates “is one of the largest population-based studies” to examine the relationship between sleep disturbances, diabetes, and mortality, commented Sirimon Reutrakul, MD, an endocrinologist and diabetes specialist at the University of Illinois Hospital in Chicago.

“This study highlights the detrimental effects of sleep disturbances in people with or without diabetes, and adds to the effects of sleep disturbances such as insomnia symptoms. People with diabetes often have sleep disturbances. Obstructive sleep apnea is very common in people with diabetes, and insomnia symptoms could be present in people with obstructive sleep apnea or it could be a separate problem,” Dr. Reutrakul said in an interview. Sleep disturbances can arise from direct effects of diabetes, such as nocturia, worry about glucose levels, pain, depressive symptoms, and anxiety, or can result from comorbidities that interfere with sleep.

“It is prudent to ask patients with diabetes about sleep patterns,” said Dr. Reutrakul, and she endorsed the specific question that Dr. Knutson recommended asking patients. Other aspects of sleep quality that could be helpful for a diagnosis include sleep duration, sleep timing, and snoring. “Some physicians ask these questions, but we need to spread awareness,” she added.

Prior to referring patients to a sleep clinic, Dr. Reutrakul suggested that clinicians could also assess possible triggers such as inadequate glucose control, pain, and anxiety, and they could also recommend good sleep hygiene strategies such as what’s recommended by the Sleep Foundation.
 

Sleep disturbances ‘highly prevalent’ among U.K. adults.

The UK Biobank enrolled just over 500,000 people aged 37-73 years during 2006-2010, and 487,728 of these people had data available that allowed their inclusion in the analysis. That group averaged about 57 years of age, 54% were women, 94% were White, and their average body mass index was 27-28 kg/m2.

More than a quarter of these people reported having “usual” sleep disturbances, showing that sleep disturbances are “highly prevalent” among U.K. residents, noted the authors. Just under a quarter of the subjects reported they never or rarely had sleep disturbances, and the remaining half of subjects said they “sometimes” had sleep disturbances.

In addition, 69% reported neither diabetes nor frequent sleep disturbances, 26% had frequent sleep disturbances but no diabetes, 3% had diabetes but not frequent sleep disturbances, and 2% had both diabetes and frequent sleep disturbances.

During the average 8.9-year follow-up, 19,177 people died from any cause (4%), and 3,874 of these deaths involved cardiovascular disease causes. Despite the significant association of diabetes and frequent sleep disturbances with an increased rate of all-cause mortality, the same combination showed no significant link with cardiovascular mortality in the study’s full-adjusted model. This may be because “frequent sleep disturbances can lead to a variety of causes of death,” Dr. Knutson suggested.

The information collected by the UK Biobank did not allow the researchers to distinguish between type 1 and type 2 diabetes.

The findings “suggest that regardless of the cause of sleep disturbance, reporting sleep disturbances on a frequent basis is an important signal of elevated risk of mortality. Such symptoms should therefore be investigated further by physicians, particularly in patients who have also been diagnosed with diabetes,” wrote Dr. Knutson and coauthors. “This is the first study to examine the effect of the combination of insomnia and diabetes on mortality risk.”

But Dr. Knutson highlighted that “sleep problems are important for everyone, not just people with diabetes.

Neither Dr. Knutson and coauthors nor Dr. Reutrakul had no disclosures.

[email protected]

More evidence suggests the severity of internet addiction (IA) is directly related to the severity of sleep problems in youth.

Results from a study of more than 4,000 adolescent students show IA severity was linked to less sleep and to daytime sleepiness. In addition, boys aged 12-14 years who were addicted to computer games versus social media networking were the most affected.

Sleep issues could be “easily detectable manifestations of pathological internet addiction,” investigator Sergey Tereshchenko, PhD, Scientific Research Institute for Medical Problems of the North, Krasnoyask State Medical University, Russia, told this news organization.

These sleep problems require attention and correction, Dr. Tereshchenko added.

The findings were presented at the virtual Congress of the European Academy of Neurology 2021.
 

New phenomenon

IA is a relatively new psychological phenomenon and is most prevalent in “socially vulnerable groups,” such as adolescents, Dr. Tereshchenko said.

He cited numerous studies that have “convincingly demonstrated” IA is comorbid with a broad range of psychopathologic conditions, including depression, anxiety, and attention deficit hyperactivity disorder.

There is also growing evidence, including from systematic reviews in 2014 and 2019, that IA affects a wide range of sleep parameters.

However, most studies in adolescents have used only one psychometric tool to assess addiction, revealing only the “general IA pattern” and not the type of IA, Dr. Tereshchenko noted.

Adolescents may not be addicted to the internet itself but to certain behaviors like gaming or social networking, he said.

The “undoubted advantage” of his team’s research is the use of more than one tool, making it possible to “verify the predominant content of the addiction,” he added.

The investigators previously assessed general prevalence of IA in adolescents in Siberia and found about 6.8% of participants displayed pathological IA behavior – and that gaming addiction is more common in boys whereas addiction to social networking is more common in girls.

This prevalence rate is lower than in the Philippines (21.1%), Hong Kong (16.4%), Malaysia (14.1%), China (11%), and South Korea (9.7%), but slightly higher than in Japan (6.2%).

IA prevalence among adolescents in Europe ranges from 1% to 11%, with an average of 4.4%, said Dr. Tereshchenko.
 

Siberian students’ sleep

The current study included 4,344 students aged 12-18 years (average age, about 15 years) from 10 public schools in three large cities of Central Siberia (Krasnoyarsk, Abakan, and Kyzyl). There were slightly more girls than boys in the study sample.

Participants completed the Russian language version of the Chen Internet Addiction Scale (CIAS), which covers five symptomatic criteria for addictive behavior: withdrawal symptoms, signs of tolerance, compulsive use, psychological or physical problems, and difficulty managing time.

In this questionnaire, respondents rate several statements regarding the effect of internet use, each on a 4-point Likert scale: not at all (1 point), a little bit (2 points), moderately (3 points) and extremely (4). The total score ranges from 26 to 104.

A CIAS score of 26-42 indicates adaptive internet use, 43-64 indicates maladaptive internet use, and 65 and above indicates pathological internet use (PIU), which was classified as “internet-addicted.”

The researchers also used the nine-item Social Media Disorder Scale, as well as the Pittsburgh Sleep Quality Index to assess nighttime sleep.

Among other questions, teens were asked how long it usually took them to fall asleep and when they typically went to bed and woke up on school nights.

For daytime sleepiness, investigators used the targeted Pediatric Daytime Sleepiness Scale questionnaire, making them among the few research groups to use this psychometric instrument, Dr. Tereshchenko noted.

After parental consent was given, students completed the tests at the end of the day’s lessons. Total test time was about 45 minutes.
 

Sleep disturbance

Initial study results showed that compared with the other groups, adolescents with PIU tended to go to bed later, wake up later, take longer to fall asleep, sleep less at night, have more nighttime awakenings, and have more daytime sleepiness.

Sleep quality was the most impaired in boys aged 12-14 years who are addicted to internet computer games.

“In this group, 5 of the 6 sleep assessment parameters we studied were changed,” Dr. Tereshchenko reported.

Decreased total nighttime sleep was more common in older adolescents.

On average, boys and girls aged 15-18 years got less than the recommended 8 hours of sleep per night. Boys with IA got only about 6.4 hours per night and girls with IA got about 6.6 hours.

Interestingly, IA is generally more prevalent among teen girls than boys in Russia, which is not the case in Europe and North America, Dr. Tereshchenko noted.

Mechanisms linking IA and sleep disorders are not clear, but the relationship is probably multifactorial and perhaps interrelated, creating something of a “vicious circle,” he said.

“Sleep disturbances, which reflect psychosocial problems, depression, and anxiety-phobic disorders, can precede and contribute to IA. On the other hand, sleep disturbances such as insomnia can lead to increased use of the internet in the evening and at night, further exacerbating the problem,” said Dr. Tereshchenko.

Research is lacking on useful treatments for youth with IA, but these kids would likely benefit from behavioral therapy approaches, he added.
 

No escape?

Commenting on the study for this news organization, Maurice M. Ohayon, MD, DSc, PhD, director of the Stanford Sleep Epidemiology Research Center, Stanford University, California, said the topic of youth IA is “very important.”

Previous research in this field has shown a major impact from IA not only on sleep but also on mood – with irritability, depression, and even thoughts of suicide being possible red flags, said Dr. Ohayon, who was not involved in the current study.

Interestingly, his own research has also found that young teenage boys are most at risk for gaming addiction.

Although internet gaming has some positive effects, such as fostering leadership skills and relationships, it has become increasingly violent and isolating, with more adult professional gamers preying on younger players, Dr. Ohayon said.

“The major problem is that it’s putting children in a virtual world from which it’s difficult to escape,” he added.

Dr. Ohayon also noted concern about future developmental effects in kids who play video games for hours on end without coming out of their bedroom and with no physical contact with fellow players.

Parents should intervene before this situation occurs and limit the time their children spend on the gaming console, he said.

A version of this article first appeared on Medscape.com.

More evidence suggests the severity of internet addiction (IA) is directly related to the severity of sleep problems in youth.

Results from a study of more than 4,000 adolescent students show IA severity was linked to less sleep and to daytime sleepiness. In addition, boys aged 12-14 years who were addicted to computer games versus social media networking were the most affected.

Sleep issues could be “easily detectable manifestations of pathological internet addiction,” investigator Sergey Tereshchenko, PhD, Scientific Research Institute for Medical Problems of the North, Krasnoyask State Medical University, Russia, told this news organization.

These sleep problems require attention and correction, Dr. Tereshchenko added.

The findings were presented at the virtual Congress of the European Academy of Neurology 2021.
 

New phenomenon

IA is a relatively new psychological phenomenon and is most prevalent in “socially vulnerable groups,” such as adolescents, Dr. Tereshchenko said.

He cited numerous studies that have “convincingly demonstrated” IA is comorbid with a broad range of psychopathologic conditions, including depression, anxiety, and attention deficit hyperactivity disorder.

There is also growing evidence, including from systematic reviews in 2014 and 2019, that IA affects a wide range of sleep parameters.

However, most studies in adolescents have used only one psychometric tool to assess addiction, revealing only the “general IA pattern” and not the type of IA, Dr. Tereshchenko noted.

Adolescents may not be addicted to the internet itself but to certain behaviors like gaming or social networking, he said.

The “undoubted advantage” of his team’s research is the use of more than one tool, making it possible to “verify the predominant content of the addiction,” he added.

The investigators previously assessed general prevalence of IA in adolescents in Siberia and found about 6.8% of participants displayed pathological IA behavior – and that gaming addiction is more common in boys whereas addiction to social networking is more common in girls.

This prevalence rate is lower than in the Philippines (21.1%), Hong Kong (16.4%), Malaysia (14.1%), China (11%), and South Korea (9.7%), but slightly higher than in Japan (6.2%).

IA prevalence among adolescents in Europe ranges from 1% to 11%, with an average of 4.4%, said Dr. Tereshchenko.
 

Siberian students’ sleep

The current study included 4,344 students aged 12-18 years (average age, about 15 years) from 10 public schools in three large cities of Central Siberia (Krasnoyarsk, Abakan, and Kyzyl). There were slightly more girls than boys in the study sample.

Participants completed the Russian language version of the Chen Internet Addiction Scale (CIAS), which covers five symptomatic criteria for addictive behavior: withdrawal symptoms, signs of tolerance, compulsive use, psychological or physical problems, and difficulty managing time.

In this questionnaire, respondents rate several statements regarding the effect of internet use, each on a 4-point Likert scale: not at all (1 point), a little bit (2 points), moderately (3 points) and extremely (4). The total score ranges from 26 to 104.

A CIAS score of 26-42 indicates adaptive internet use, 43-64 indicates maladaptive internet use, and 65 and above indicates pathological internet use (PIU), which was classified as “internet-addicted.”

The researchers also used the nine-item Social Media Disorder Scale, as well as the Pittsburgh Sleep Quality Index to assess nighttime sleep.

Among other questions, teens were asked how long it usually took them to fall asleep and when they typically went to bed and woke up on school nights.

For daytime sleepiness, investigators used the targeted Pediatric Daytime Sleepiness Scale questionnaire, making them among the few research groups to use this psychometric instrument, Dr. Tereshchenko noted.

After parental consent was given, students completed the tests at the end of the day’s lessons. Total test time was about 45 minutes.
 

Sleep disturbance

Initial study results showed that compared with the other groups, adolescents with PIU tended to go to bed later, wake up later, take longer to fall asleep, sleep less at night, have more nighttime awakenings, and have more daytime sleepiness.

Sleep quality was the most impaired in boys aged 12-14 years who are addicted to internet computer games.

“In this group, 5 of the 6 sleep assessment parameters we studied were changed,” Dr. Tereshchenko reported.

Decreased total nighttime sleep was more common in older adolescents.

On average, boys and girls aged 15-18 years got less than the recommended 8 hours of sleep per night. Boys with IA got only about 6.4 hours per night and girls with IA got about 6.6 hours.

Interestingly, IA is generally more prevalent among teen girls than boys in Russia, which is not the case in Europe and North America, Dr. Tereshchenko noted.

Mechanisms linking IA and sleep disorders are not clear, but the relationship is probably multifactorial and perhaps interrelated, creating something of a “vicious circle,” he said.

“Sleep disturbances, which reflect psychosocial problems, depression, and anxiety-phobic disorders, can precede and contribute to IA. On the other hand, sleep disturbances such as insomnia can lead to increased use of the internet in the evening and at night, further exacerbating the problem,” said Dr. Tereshchenko.

Research is lacking on useful treatments for youth with IA, but these kids would likely benefit from behavioral therapy approaches, he added.
 

No escape?

Commenting on the study for this news organization, Maurice M. Ohayon, MD, DSc, PhD, director of the Stanford Sleep Epidemiology Research Center, Stanford University, California, said the topic of youth IA is “very important.”

Previous research in this field has shown a major impact from IA not only on sleep but also on mood – with irritability, depression, and even thoughts of suicide being possible red flags, said Dr. Ohayon, who was not involved in the current study.

Interestingly, his own research has also found that young teenage boys are most at risk for gaming addiction.

Although internet gaming has some positive effects, such as fostering leadership skills and relationships, it has become increasingly violent and isolating, with more adult professional gamers preying on younger players, Dr. Ohayon said.

“The major problem is that it’s putting children in a virtual world from which it’s difficult to escape,” he added.

Dr. Ohayon also noted concern about future developmental effects in kids who play video games for hours on end without coming out of their bedroom and with no physical contact with fellow players.

Parents should intervene before this situation occurs and limit the time their children spend on the gaming console, he said.

A version of this article first appeared on Medscape.com.

More evidence suggests the severity of internet addiction (IA) is directly related to the severity of sleep problems in youth.

Results from a study of more than 4,000 adolescent students show IA severity was linked to less sleep and to daytime sleepiness. In addition, boys aged 12-14 years who were addicted to computer games versus social media networking were the most affected.

Sleep issues could be “easily detectable manifestations of pathological internet addiction,” investigator Sergey Tereshchenko, PhD, Scientific Research Institute for Medical Problems of the North, Krasnoyask State Medical University, Russia, told this news organization.

These sleep problems require attention and correction, Dr. Tereshchenko added.

The findings were presented at the virtual Congress of the European Academy of Neurology 2021.
 

New phenomenon

IA is a relatively new psychological phenomenon and is most prevalent in “socially vulnerable groups,” such as adolescents, Dr. Tereshchenko said.

He cited numerous studies that have “convincingly demonstrated” IA is comorbid with a broad range of psychopathologic conditions, including depression, anxiety, and attention deficit hyperactivity disorder.

There is also growing evidence, including from systematic reviews in 2014 and 2019, that IA affects a wide range of sleep parameters.

However, most studies in adolescents have used only one psychometric tool to assess addiction, revealing only the “general IA pattern” and not the type of IA, Dr. Tereshchenko noted.

Adolescents may not be addicted to the internet itself but to certain behaviors like gaming or social networking, he said.

The “undoubted advantage” of his team’s research is the use of more than one tool, making it possible to “verify the predominant content of the addiction,” he added.

The investigators previously assessed general prevalence of IA in adolescents in Siberia and found about 6.8% of participants displayed pathological IA behavior – and that gaming addiction is more common in boys whereas addiction to social networking is more common in girls.

This prevalence rate is lower than in the Philippines (21.1%), Hong Kong (16.4%), Malaysia (14.1%), China (11%), and South Korea (9.7%), but slightly higher than in Japan (6.2%).

IA prevalence among adolescents in Europe ranges from 1% to 11%, with an average of 4.4%, said Dr. Tereshchenko.
 

Siberian students’ sleep

The current study included 4,344 students aged 12-18 years (average age, about 15 years) from 10 public schools in three large cities of Central Siberia (Krasnoyarsk, Abakan, and Kyzyl). There were slightly more girls than boys in the study sample.

Participants completed the Russian language version of the Chen Internet Addiction Scale (CIAS), which covers five symptomatic criteria for addictive behavior: withdrawal symptoms, signs of tolerance, compulsive use, psychological or physical problems, and difficulty managing time.

In this questionnaire, respondents rate several statements regarding the effect of internet use, each on a 4-point Likert scale: not at all (1 point), a little bit (2 points), moderately (3 points) and extremely (4). The total score ranges from 26 to 104.

A CIAS score of 26-42 indicates adaptive internet use, 43-64 indicates maladaptive internet use, and 65 and above indicates pathological internet use (PIU), which was classified as “internet-addicted.”

The researchers also used the nine-item Social Media Disorder Scale, as well as the Pittsburgh Sleep Quality Index to assess nighttime sleep.

Among other questions, teens were asked how long it usually took them to fall asleep and when they typically went to bed and woke up on school nights.

For daytime sleepiness, investigators used the targeted Pediatric Daytime Sleepiness Scale questionnaire, making them among the few research groups to use this psychometric instrument, Dr. Tereshchenko noted.

After parental consent was given, students completed the tests at the end of the day’s lessons. Total test time was about 45 minutes.
 

Sleep disturbance

Initial study results showed that compared with the other groups, adolescents with PIU tended to go to bed later, wake up later, take longer to fall asleep, sleep less at night, have more nighttime awakenings, and have more daytime sleepiness.

Sleep quality was the most impaired in boys aged 12-14 years who are addicted to internet computer games.

“In this group, 5 of the 6 sleep assessment parameters we studied were changed,” Dr. Tereshchenko reported.

Decreased total nighttime sleep was more common in older adolescents.

On average, boys and girls aged 15-18 years got less than the recommended 8 hours of sleep per night. Boys with IA got only about 6.4 hours per night and girls with IA got about 6.6 hours.

Interestingly, IA is generally more prevalent among teen girls than boys in Russia, which is not the case in Europe and North America, Dr. Tereshchenko noted.

Mechanisms linking IA and sleep disorders are not clear, but the relationship is probably multifactorial and perhaps interrelated, creating something of a “vicious circle,” he said.

“Sleep disturbances, which reflect psychosocial problems, depression, and anxiety-phobic disorders, can precede and contribute to IA. On the other hand, sleep disturbances such as insomnia can lead to increased use of the internet in the evening and at night, further exacerbating the problem,” said Dr. Tereshchenko.

Research is lacking on useful treatments for youth with IA, but these kids would likely benefit from behavioral therapy approaches, he added.
 

No escape?

Commenting on the study for this news organization, Maurice M. Ohayon, MD, DSc, PhD, director of the Stanford Sleep Epidemiology Research Center, Stanford University, California, said the topic of youth IA is “very important.”

Previous research in this field has shown a major impact from IA not only on sleep but also on mood – with irritability, depression, and even thoughts of suicide being possible red flags, said Dr. Ohayon, who was not involved in the current study.

Interestingly, his own research has also found that young teenage boys are most at risk for gaming addiction.

Although internet gaming has some positive effects, such as fostering leadership skills and relationships, it has become increasingly violent and isolating, with more adult professional gamers preying on younger players, Dr. Ohayon said.

“The major problem is that it’s putting children in a virtual world from which it’s difficult to escape,” he added.

Dr. Ohayon also noted concern about future developmental effects in kids who play video games for hours on end without coming out of their bedroom and with no physical contact with fellow players.

Parents should intervene before this situation occurs and limit the time their children spend on the gaming console, he said.

A version of this article first appeared on Medscape.com.

Treating obstructive sleep apnea with continuous positive airway pressure therapy protects against myocardial infarction, stroke, and other cardiovascular (CV) events, particularly for patients with moderate to severe OSA and those who are more adherent to CPAP therapy, a new study suggests.

“Most clinical trials on the effect of CPAP on CV diseases to date have focused on secondary CV prevention. This study contributes another piece of evidence about the role of CPAP therapy to prevent CV diseases,” said Diego R. Mazzotti, PhD, an assistant professor at the University of Kansas Medical Center, Kansas City.

“Our study, while observational, suggests that clinical trials focused on understanding how to sustain long-term CPAP adherence in obstructive sleep apnea patients are necessary and could be critical for optimizing comorbidity risk reduction,” Dr. Mazzotti said.

The study was presented at the virtual annual meeting of the Associated Professional Sleep Societies.
 

Good adherence important

The researchers analyzed the electronic health records of adults referred for a sleep study through the Kaiser Permanente Southern California health system. The sample included 11,145 adults without OSA, 13,898 with OSA who used CPAP, and 20,884 adults with OSA who did not use CPAP. None of them had CV disease at baseline. Median follow-up was 262 days.

The primary outcome was first occurrence of myocardial infarction, stroke, unstable angina, heart failure, or death caused by CV disease.

In adjusted models, adults with moderate to severe OSA (apnea-hypopnea index ≥15) who did not use CPAP were 71% more likely than those without OSA to have a first CV event (hazard ratio, 1.71; 95% CI, 1.11-2.64). However, the risk for a CV event during follow-up was 32% lower among OSA patients with any CPAP use (HR, 0.68; 95% CI, 0.50-0.93; P = .016).

The effect was mostly driven by those who used CPAP for at least 4 hours per night (HR, 0.60; 95% CI, 0.39-0.95). This association was stronger for those with moderate to severe OSA (HR, 0.56; 95% CI, 0.39-0.81).

“This study highlights the importance of long-term management of CPAP therapy in patients with moderate-severe OSA,” Dr. Mazzotti said in an interview.

“It suggests that maintaining good CPAP adherence might be beneficial for cardiovascular health, besides the already established benefits on quality of life, sleepiness, and other cardiometabolic functions,” he said.

Dr. Mazzotti said several mechanisms might explain the association between CPAP use and lower risk for CV events. “CPAP treats OSA by preventing respiratory pauses that occur during sleep, therefore preventing arousals, sleep fragmentation, and decreases in blood oxygen. These improved cardiorespiratory functions can be beneficial to avoid certain molecular changes that are known to contribute to cardiovascular risk, such as oxidative stress and inflammation,” he explained.

“However, specific studies fully understanding these mechanisms are necessary,” Dr. Mazzotti added.

In a comment, Nitun Verma, MD, a spokesperson for the American Academy of Sleep Medicine, said that “the frequent decreases in oxygen levels and fragmented sleep from apnea are associated with cardiovascular disorders. We know this from multiple studies. This, however, was a large study and strengthens the association between improving apnea and reduced serious cardiovascular events.”

Funding for the study was provided by the American Academy of Sleep Medicine Foundation and the American Heart Association. Dr. Mazzotti and Dr. Verma disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Treating obstructive sleep apnea with continuous positive airway pressure therapy protects against myocardial infarction, stroke, and other cardiovascular (CV) events, particularly for patients with moderate to severe OSA and those who are more adherent to CPAP therapy, a new study suggests.

“Most clinical trials on the effect of CPAP on CV diseases to date have focused on secondary CV prevention. This study contributes another piece of evidence about the role of CPAP therapy to prevent CV diseases,” said Diego R. Mazzotti, PhD, an assistant professor at the University of Kansas Medical Center, Kansas City.

“Our study, while observational, suggests that clinical trials focused on understanding how to sustain long-term CPAP adherence in obstructive sleep apnea patients are necessary and could be critical for optimizing comorbidity risk reduction,” Dr. Mazzotti said.

The study was presented at the virtual annual meeting of the Associated Professional Sleep Societies.
 

Good adherence important

The researchers analyzed the electronic health records of adults referred for a sleep study through the Kaiser Permanente Southern California health system. The sample included 11,145 adults without OSA, 13,898 with OSA who used CPAP, and 20,884 adults with OSA who did not use CPAP. None of them had CV disease at baseline. Median follow-up was 262 days.

The primary outcome was first occurrence of myocardial infarction, stroke, unstable angina, heart failure, or death caused by CV disease.

In adjusted models, adults with moderate to severe OSA (apnea-hypopnea index ≥15) who did not use CPAP were 71% more likely than those without OSA to have a first CV event (hazard ratio, 1.71; 95% CI, 1.11-2.64). However, the risk for a CV event during follow-up was 32% lower among OSA patients with any CPAP use (HR, 0.68; 95% CI, 0.50-0.93; P = .016).

The effect was mostly driven by those who used CPAP for at least 4 hours per night (HR, 0.60; 95% CI, 0.39-0.95). This association was stronger for those with moderate to severe OSA (HR, 0.56; 95% CI, 0.39-0.81).

“This study highlights the importance of long-term management of CPAP therapy in patients with moderate-severe OSA,” Dr. Mazzotti said in an interview.

“It suggests that maintaining good CPAP adherence might be beneficial for cardiovascular health, besides the already established benefits on quality of life, sleepiness, and other cardiometabolic functions,” he said.

Dr. Mazzotti said several mechanisms might explain the association between CPAP use and lower risk for CV events. “CPAP treats OSA by preventing respiratory pauses that occur during sleep, therefore preventing arousals, sleep fragmentation, and decreases in blood oxygen. These improved cardiorespiratory functions can be beneficial to avoid certain molecular changes that are known to contribute to cardiovascular risk, such as oxidative stress and inflammation,” he explained.

“However, specific studies fully understanding these mechanisms are necessary,” Dr. Mazzotti added.

In a comment, Nitun Verma, MD, a spokesperson for the American Academy of Sleep Medicine, said that “the frequent decreases in oxygen levels and fragmented sleep from apnea are associated with cardiovascular disorders. We know this from multiple studies. This, however, was a large study and strengthens the association between improving apnea and reduced serious cardiovascular events.”

Funding for the study was provided by the American Academy of Sleep Medicine Foundation and the American Heart Association. Dr. Mazzotti and Dr. Verma disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Treating obstructive sleep apnea with continuous positive airway pressure therapy protects against myocardial infarction, stroke, and other cardiovascular (CV) events, particularly for patients with moderate to severe OSA and those who are more adherent to CPAP therapy, a new study suggests.

“Most clinical trials on the effect of CPAP on CV diseases to date have focused on secondary CV prevention. This study contributes another piece of evidence about the role of CPAP therapy to prevent CV diseases,” said Diego R. Mazzotti, PhD, an assistant professor at the University of Kansas Medical Center, Kansas City.

“Our study, while observational, suggests that clinical trials focused on understanding how to sustain long-term CPAP adherence in obstructive sleep apnea patients are necessary and could be critical for optimizing comorbidity risk reduction,” Dr. Mazzotti said.

The study was presented at the virtual annual meeting of the Associated Professional Sleep Societies.
 

Good adherence important

The researchers analyzed the electronic health records of adults referred for a sleep study through the Kaiser Permanente Southern California health system. The sample included 11,145 adults without OSA, 13,898 with OSA who used CPAP, and 20,884 adults with OSA who did not use CPAP. None of them had CV disease at baseline. Median follow-up was 262 days.

The primary outcome was first occurrence of myocardial infarction, stroke, unstable angina, heart failure, or death caused by CV disease.

In adjusted models, adults with moderate to severe OSA (apnea-hypopnea index ≥15) who did not use CPAP were 71% more likely than those without OSA to have a first CV event (hazard ratio, 1.71; 95% CI, 1.11-2.64). However, the risk for a CV event during follow-up was 32% lower among OSA patients with any CPAP use (HR, 0.68; 95% CI, 0.50-0.93; P = .016).

The effect was mostly driven by those who used CPAP for at least 4 hours per night (HR, 0.60; 95% CI, 0.39-0.95). This association was stronger for those with moderate to severe OSA (HR, 0.56; 95% CI, 0.39-0.81).

“This study highlights the importance of long-term management of CPAP therapy in patients with moderate-severe OSA,” Dr. Mazzotti said in an interview.

“It suggests that maintaining good CPAP adherence might be beneficial for cardiovascular health, besides the already established benefits on quality of life, sleepiness, and other cardiometabolic functions,” he said.

Dr. Mazzotti said several mechanisms might explain the association between CPAP use and lower risk for CV events. “CPAP treats OSA by preventing respiratory pauses that occur during sleep, therefore preventing arousals, sleep fragmentation, and decreases in blood oxygen. These improved cardiorespiratory functions can be beneficial to avoid certain molecular changes that are known to contribute to cardiovascular risk, such as oxidative stress and inflammation,” he explained.

“However, specific studies fully understanding these mechanisms are necessary,” Dr. Mazzotti added.

In a comment, Nitun Verma, MD, a spokesperson for the American Academy of Sleep Medicine, said that “the frequent decreases in oxygen levels and fragmented sleep from apnea are associated with cardiovascular disorders. We know this from multiple studies. This, however, was a large study and strengthens the association between improving apnea and reduced serious cardiovascular events.”

Funding for the study was provided by the American Academy of Sleep Medicine Foundation and the American Heart Association. Dr. Mazzotti and Dr. Verma disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

What you experience in your dreams might feel random and disjointed, but that chaos during sleep might serve a function, according to Erin Wamsley, PhD, an associate professor of psychology and neuroscience at Furman University in Greenville, S.C. In fact, evidence uncovered by Dr. Wamsley and associates suggests that dreams can prepare the mind for future situations it will encounter.

Previous research and anecdotal evidence have shown that dreams use fragments of past experiences, Dr. Wamsley explained. While studying dreams, her team found that the mind is using select fragments of past experiences to prepare for a known upcoming event.

“This is new evidence that dreams reflect a memory-processing function,” said Dr. Wamsley, who presented the work at the virtual annual meeting of the Associated Professional Sleep Societies.

Some high performers already use past experiences to excel in future events. For instance, Michael Phelps, the most decorated Olympic swimmer, with 28 medals, would “mentally rehearse” his swims for up to 2 hours per day, according to his coach, Bob Bowman.

Using sleep to strengthen this process is an exciting prospect that scientists have been eager to figure out, said Allison Brager, PhD, director of human performance at the U.S. Army Warrior Fitness Training Center. Deep REM sleep can lead to improved learning and memory, she said. “So, hypothetically, better dreams mean better sleep, and that equals better performance.”

For their research, Dr. Wamsley’s team hooked 48 students up to a polysomnography machine to measure sleep cycles and how often they were in a deep REM sleep. The students who took part in the study spent the night in a sleep lab.

The students were woken up multiple times during the night and asked to report what they were dreaming about.

In the morning, they were given their reports and asked to identify familiar features or potential sources for particular dreams. More than half the dreams were tied to a memory the students recalled. One-quarter of the dreams were related to specific upcoming events the students reported. And about 40% of the dreams with a future event in them also included memories of past experiences. This was more common the longer the students dreamed, the scientists explained.

And this was also more common later in the night, possibly because the dreamer is closer to waking and the anticipated event is approaching, Dr. Wamsley said.

Studying dreams is a tricky, subjective business and not always taken as seriously as other aspects of sleep and neuroscience because it involves questions of human consciousness itself, said Erik Hoel, PhD, a research assistant professor of neuroscience at Tufts University in Medford, Mass.

In a recent report published in Patterns, he suggested that our weirdest dreams help our brains process our day-to-day experiences in a way that enables deeper learning.

“This type of research is challenged by the method,” Dr. Hoel said.

In the Wamsley study, “waking people up from a deep sleep and asking them to recollect their dream content will only get you part of the experience because it fades so quickly.” That said, the value of connecting what happens as a result could be meaningful, he noted. For example, study participants could be asked whether their future event went as planned and whether they think the outcome was related to how well they “prepared” in their dreams.

Even then, it would still be a subjective analysis. But going in those directions might lead to meaningful new training, Dr. Hoel said.

And training yourself to recall only specific memories right before sleep might prepare your mind in a focused way for certain events, from giving a presentation to having a difficult conversation with someone, or maybe even winning at the Olympics.

A version of this article first appeared on WebMD.com.

What you experience in your dreams might feel random and disjointed, but that chaos during sleep might serve a function, according to Erin Wamsley, PhD, an associate professor of psychology and neuroscience at Furman University in Greenville, S.C. In fact, evidence uncovered by Dr. Wamsley and associates suggests that dreams can prepare the mind for future situations it will encounter.

Previous research and anecdotal evidence have shown that dreams use fragments of past experiences, Dr. Wamsley explained. While studying dreams, her team found that the mind is using select fragments of past experiences to prepare for a known upcoming event.

“This is new evidence that dreams reflect a memory-processing function,” said Dr. Wamsley, who presented the work at the virtual annual meeting of the Associated Professional Sleep Societies.

Some high performers already use past experiences to excel in future events. For instance, Michael Phelps, the most decorated Olympic swimmer, with 28 medals, would “mentally rehearse” his swims for up to 2 hours per day, according to his coach, Bob Bowman.

Using sleep to strengthen this process is an exciting prospect that scientists have been eager to figure out, said Allison Brager, PhD, director of human performance at the U.S. Army Warrior Fitness Training Center. Deep REM sleep can lead to improved learning and memory, she said. “So, hypothetically, better dreams mean better sleep, and that equals better performance.”

For their research, Dr. Wamsley’s team hooked 48 students up to a polysomnography machine to measure sleep cycles and how often they were in a deep REM sleep. The students who took part in the study spent the night in a sleep lab.

The students were woken up multiple times during the night and asked to report what they were dreaming about.

In the morning, they were given their reports and asked to identify familiar features or potential sources for particular dreams. More than half the dreams were tied to a memory the students recalled. One-quarter of the dreams were related to specific upcoming events the students reported. And about 40% of the dreams with a future event in them also included memories of past experiences. This was more common the longer the students dreamed, the scientists explained.

And this was also more common later in the night, possibly because the dreamer is closer to waking and the anticipated event is approaching, Dr. Wamsley said.

Studying dreams is a tricky, subjective business and not always taken as seriously as other aspects of sleep and neuroscience because it involves questions of human consciousness itself, said Erik Hoel, PhD, a research assistant professor of neuroscience at Tufts University in Medford, Mass.

In a recent report published in Patterns, he suggested that our weirdest dreams help our brains process our day-to-day experiences in a way that enables deeper learning.

“This type of research is challenged by the method,” Dr. Hoel said.

In the Wamsley study, “waking people up from a deep sleep and asking them to recollect their dream content will only get you part of the experience because it fades so quickly.” That said, the value of connecting what happens as a result could be meaningful, he noted. For example, study participants could be asked whether their future event went as planned and whether they think the outcome was related to how well they “prepared” in their dreams.

Even then, it would still be a subjective analysis. But going in those directions might lead to meaningful new training, Dr. Hoel said.

And training yourself to recall only specific memories right before sleep might prepare your mind in a focused way for certain events, from giving a presentation to having a difficult conversation with someone, or maybe even winning at the Olympics.

A version of this article first appeared on WebMD.com.

What you experience in your dreams might feel random and disjointed, but that chaos during sleep might serve a function, according to Erin Wamsley, PhD, an associate professor of psychology and neuroscience at Furman University in Greenville, S.C. In fact, evidence uncovered by Dr. Wamsley and associates suggests that dreams can prepare the mind for future situations it will encounter.

Previous research and anecdotal evidence have shown that dreams use fragments of past experiences, Dr. Wamsley explained. While studying dreams, her team found that the mind is using select fragments of past experiences to prepare for a known upcoming event.

“This is new evidence that dreams reflect a memory-processing function,” said Dr. Wamsley, who presented the work at the virtual annual meeting of the Associated Professional Sleep Societies.

Some high performers already use past experiences to excel in future events. For instance, Michael Phelps, the most decorated Olympic swimmer, with 28 medals, would “mentally rehearse” his swims for up to 2 hours per day, according to his coach, Bob Bowman.

Using sleep to strengthen this process is an exciting prospect that scientists have been eager to figure out, said Allison Brager, PhD, director of human performance at the U.S. Army Warrior Fitness Training Center. Deep REM sleep can lead to improved learning and memory, she said. “So, hypothetically, better dreams mean better sleep, and that equals better performance.”

For their research, Dr. Wamsley’s team hooked 48 students up to a polysomnography machine to measure sleep cycles and how often they were in a deep REM sleep. The students who took part in the study spent the night in a sleep lab.

The students were woken up multiple times during the night and asked to report what they were dreaming about.

In the morning, they were given their reports and asked to identify familiar features or potential sources for particular dreams. More than half the dreams were tied to a memory the students recalled. One-quarter of the dreams were related to specific upcoming events the students reported. And about 40% of the dreams with a future event in them also included memories of past experiences. This was more common the longer the students dreamed, the scientists explained.

And this was also more common later in the night, possibly because the dreamer is closer to waking and the anticipated event is approaching, Dr. Wamsley said.

Studying dreams is a tricky, subjective business and not always taken as seriously as other aspects of sleep and neuroscience because it involves questions of human consciousness itself, said Erik Hoel, PhD, a research assistant professor of neuroscience at Tufts University in Medford, Mass.

In a recent report published in Patterns, he suggested that our weirdest dreams help our brains process our day-to-day experiences in a way that enables deeper learning.

“This type of research is challenged by the method,” Dr. Hoel said.

In the Wamsley study, “waking people up from a deep sleep and asking them to recollect their dream content will only get you part of the experience because it fades so quickly.” That said, the value of connecting what happens as a result could be meaningful, he noted. For example, study participants could be asked whether their future event went as planned and whether they think the outcome was related to how well they “prepared” in their dreams.

Even then, it would still be a subjective analysis. But going in those directions might lead to meaningful new training, Dr. Hoel said.

And training yourself to recall only specific memories right before sleep might prepare your mind in a focused way for certain events, from giving a presentation to having a difficult conversation with someone, or maybe even winning at the Olympics.

A version of this article first appeared on WebMD.com.

Difficulty falling asleep may be predictive of future cognitive impairment in older adults – and depressive symptoms and vascular disease may partially drive this association, new research suggests.

Trouble falling asleep “may be a modifiable risk factor for later-life cognitive impairment and dementia,” said lead author Afsara Zaheed, a PhD candidate in clinical science, department of psychology, University of Michigan, Ann Arbor.

“Patients should also be aware of the importance of insomnia on cognitive functioning so that they can bring up these concerns with their providers early,” she said.

The findings were presented at Virtual SLEEP 2021, the 35th Annual Meeting of the Associated Professional Sleep Societies.
 

Poor sleep common with age

As many as one-half of older adults report having poor sleep quality and insomnia, and growing evidence suggests that insomnia may be a unique risk factor for cognitive decline in later life, Ms. Zaheed explained.

To investigate further, the researchers analyzed data on 2,496 adults aged 51 years and older who were participants in the Health and Retirement Study, a longitudinal study of aging in a nationally representative population of older adults.

In 2002, participants were asked how often they had trouble falling asleep, woke up during the night, woke up too early, and were not able to fall asleep again and how often they felt really rested when they woke up in the morning.

In 2016, participants’ cognition was assessed using a battery of neuropsychological tests that gauged episodic memory, executive function, language, visuospatial/construction, and processing speed.

Analyses controlled for sociodemographics, baseline global cognitive performance, and the influence of depressive symptoms and vascular disease.

Compared with other insomnia symptoms, having difficulty falling asleep in 2002 was the main insomnia symptom that was predictive of cognitive impairment 14 years later, in 2016.

More frequent trouble falling asleep was predictive of poorer episodic memory, executive function, language, processing speed, and visuospatial performance.

The associations between sleep initiation and later cognitive impairment were partially explained by depressive symptoms and vascular disease burden for all domains except episodic memory, which was only partially explained by depressive symptoms.
 

Unclear mechanism

Ms. Zaheed said research is needed to uncover neurophysiologic mechanisms underlying the observed associations. “It may be that chronic difficulty with falling asleep is associated with inflammatory or metabolic processes that negatively affect brain structure and function over time,” she said.

“Insomnia has also been linked with higher accumulation of protein aggregates in the brain that disrupt cell communication and are characteristic of late-life disorders such as Alzheimer’s disease,” she added.

“While our project did not directly investigate these potential causal pathways between insomnia and cognition, our results suggest that investigating these potential mechanisms is an important area for future research,” Ms. Zaheed said.

“While additional intervention research is needed to determine whether targeting insomnia in older patients can have lasting cognitive benefits, results from this study suggest that discussing insomnia symptoms at the primary care level may be beneficial for both doctors and patients,” she added.

“By targeting insomnia – for example, through an evidence-based cognitive–behavioral therapy approach – individuals may improve various mental and physical health outcomes in addition to improving their sleep quality,” Ms. Zaheed said.

Reached for comment, Shaheen E. Lakhan, MD, PhD, neurologist in Newton, Massachusetts, said, “There is a strong link between chronic sleep disturbances and cognitive impairment, including dementia.”

“This study further supports this link and specifically calls out initiating sleep (as opposed to staying asleep) as the culprit. It also raises the hypothesis that the link is primarily mediated by depression and vascular disease; however, the verdict is still out,” said Dr. Lakhan.

The study was funded by the National Institute on Aging. Ms. Zaheed and Dr. Lakhan have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Difficulty falling asleep may be predictive of future cognitive impairment in older adults – and depressive symptoms and vascular disease may partially drive this association, new research suggests.

Trouble falling asleep “may be a modifiable risk factor for later-life cognitive impairment and dementia,” said lead author Afsara Zaheed, a PhD candidate in clinical science, department of psychology, University of Michigan, Ann Arbor.

“Patients should also be aware of the importance of insomnia on cognitive functioning so that they can bring up these concerns with their providers early,” she said.

The findings were presented at Virtual SLEEP 2021, the 35th Annual Meeting of the Associated Professional Sleep Societies.
 

Poor sleep common with age

As many as one-half of older adults report having poor sleep quality and insomnia, and growing evidence suggests that insomnia may be a unique risk factor for cognitive decline in later life, Ms. Zaheed explained.

To investigate further, the researchers analyzed data on 2,496 adults aged 51 years and older who were participants in the Health and Retirement Study, a longitudinal study of aging in a nationally representative population of older adults.

In 2002, participants were asked how often they had trouble falling asleep, woke up during the night, woke up too early, and were not able to fall asleep again and how often they felt really rested when they woke up in the morning.

In 2016, participants’ cognition was assessed using a battery of neuropsychological tests that gauged episodic memory, executive function, language, visuospatial/construction, and processing speed.

Analyses controlled for sociodemographics, baseline global cognitive performance, and the influence of depressive symptoms and vascular disease.

Compared with other insomnia symptoms, having difficulty falling asleep in 2002 was the main insomnia symptom that was predictive of cognitive impairment 14 years later, in 2016.

More frequent trouble falling asleep was predictive of poorer episodic memory, executive function, language, processing speed, and visuospatial performance.

The associations between sleep initiation and later cognitive impairment were partially explained by depressive symptoms and vascular disease burden for all domains except episodic memory, which was only partially explained by depressive symptoms.
 

Unclear mechanism

Ms. Zaheed said research is needed to uncover neurophysiologic mechanisms underlying the observed associations. “It may be that chronic difficulty with falling asleep is associated with inflammatory or metabolic processes that negatively affect brain structure and function over time,” she said.

“Insomnia has also been linked with higher accumulation of protein aggregates in the brain that disrupt cell communication and are characteristic of late-life disorders such as Alzheimer’s disease,” she added.

“While our project did not directly investigate these potential causal pathways between insomnia and cognition, our results suggest that investigating these potential mechanisms is an important area for future research,” Ms. Zaheed said.

“While additional intervention research is needed to determine whether targeting insomnia in older patients can have lasting cognitive benefits, results from this study suggest that discussing insomnia symptoms at the primary care level may be beneficial for both doctors and patients,” she added.

“By targeting insomnia – for example, through an evidence-based cognitive–behavioral therapy approach – individuals may improve various mental and physical health outcomes in addition to improving their sleep quality,” Ms. Zaheed said.

Reached for comment, Shaheen E. Lakhan, MD, PhD, neurologist in Newton, Massachusetts, said, “There is a strong link between chronic sleep disturbances and cognitive impairment, including dementia.”

“This study further supports this link and specifically calls out initiating sleep (as opposed to staying asleep) as the culprit. It also raises the hypothesis that the link is primarily mediated by depression and vascular disease; however, the verdict is still out,” said Dr. Lakhan.

The study was funded by the National Institute on Aging. Ms. Zaheed and Dr. Lakhan have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Difficulty falling asleep may be predictive of future cognitive impairment in older adults – and depressive symptoms and vascular disease may partially drive this association, new research suggests.

Trouble falling asleep “may be a modifiable risk factor for later-life cognitive impairment and dementia,” said lead author Afsara Zaheed, a PhD candidate in clinical science, department of psychology, University of Michigan, Ann Arbor.

“Patients should also be aware of the importance of insomnia on cognitive functioning so that they can bring up these concerns with their providers early,” she said.

The findings were presented at Virtual SLEEP 2021, the 35th Annual Meeting of the Associated Professional Sleep Societies.
 

Poor sleep common with age

As many as one-half of older adults report having poor sleep quality and insomnia, and growing evidence suggests that insomnia may be a unique risk factor for cognitive decline in later life, Ms. Zaheed explained.

To investigate further, the researchers analyzed data on 2,496 adults aged 51 years and older who were participants in the Health and Retirement Study, a longitudinal study of aging in a nationally representative population of older adults.

In 2002, participants were asked how often they had trouble falling asleep, woke up during the night, woke up too early, and were not able to fall asleep again and how often they felt really rested when they woke up in the morning.

In 2016, participants’ cognition was assessed using a battery of neuropsychological tests that gauged episodic memory, executive function, language, visuospatial/construction, and processing speed.

Analyses controlled for sociodemographics, baseline global cognitive performance, and the influence of depressive symptoms and vascular disease.

Compared with other insomnia symptoms, having difficulty falling asleep in 2002 was the main insomnia symptom that was predictive of cognitive impairment 14 years later, in 2016.

More frequent trouble falling asleep was predictive of poorer episodic memory, executive function, language, processing speed, and visuospatial performance.

The associations between sleep initiation and later cognitive impairment were partially explained by depressive symptoms and vascular disease burden for all domains except episodic memory, which was only partially explained by depressive symptoms.
 

Unclear mechanism

Ms. Zaheed said research is needed to uncover neurophysiologic mechanisms underlying the observed associations. “It may be that chronic difficulty with falling asleep is associated with inflammatory or metabolic processes that negatively affect brain structure and function over time,” she said.

“Insomnia has also been linked with higher accumulation of protein aggregates in the brain that disrupt cell communication and are characteristic of late-life disorders such as Alzheimer’s disease,” she added.

“While our project did not directly investigate these potential causal pathways between insomnia and cognition, our results suggest that investigating these potential mechanisms is an important area for future research,” Ms. Zaheed said.

“While additional intervention research is needed to determine whether targeting insomnia in older patients can have lasting cognitive benefits, results from this study suggest that discussing insomnia symptoms at the primary care level may be beneficial for both doctors and patients,” she added.

“By targeting insomnia – for example, through an evidence-based cognitive–behavioral therapy approach – individuals may improve various mental and physical health outcomes in addition to improving their sleep quality,” Ms. Zaheed said.

Reached for comment, Shaheen E. Lakhan, MD, PhD, neurologist in Newton, Massachusetts, said, “There is a strong link between chronic sleep disturbances and cognitive impairment, including dementia.”

“This study further supports this link and specifically calls out initiating sleep (as opposed to staying asleep) as the culprit. It also raises the hypothesis that the link is primarily mediated by depression and vascular disease; however, the verdict is still out,” said Dr. Lakhan.

The study was funded by the National Institute on Aging. Ms. Zaheed and Dr. Lakhan have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Insomnia in childhood persists into adulthood and may raise the risk for internalizing disorders in young adults, new research indicates. However, insomnia symptoms in childhood that remit in the transition to adolescence do not confer increased risk of mood or anxiety disorders later on, the study found.

“As insomnia symptoms may precipitate or maintain internalizing disorders, our findings further reinforce the need for early sleep interventions to prevent future mental health disorders,” said lead investigator Julio Fernandez-Mendoza, PhD, associate professor at Penn State University, Hershey.

He presented his research at Virtual SLEEP 2021, the 35th annual meeting of the Associated Professional Sleep Societies.
 

Results ‘very clear’

The findings are based on data from the Penn State Child Cohort, a longitudinal, population-based sample of 700 children with a median age of 9 years, including 421 who were followed up 8 years later as adolescents (median age, 16 years) and 502 who were followed up 15 years later as young adults (median age, 24 years).

The data are “very clear that the risk of having internalizing disorders in young adulthood associated with having persistent insomnia symptoms, since childhood through adolescence into young adulthood,” Dr. Fernandez-Mendoza said in his presentation.

A persistent developmental trajectory was associated with a threefold increased risk of adult internalizing disorder (hazard ratio, 3.19).

The risk of having an internalizing disorder in young adulthood associated with newly developing (incident) insomnia symptoms is about twofold higher (HR, 1.94), whereas the risk associated with the waxing and waning pattern of insomnia is 1.5-fold (HR, 1.53) higher and only marginally significant, he reported.

An equally important finding, said Dr. Fernandez-Mendoza, is that those who had remitted insomnia symptoms in the transition to adolescence and throughout young adulthood were not at increased risk of having an internalizing disorder in young adulthood.

“Insomnia symptoms in a persistent manner associated with long-term adverse mental health outcomes, but remission of those insomnia symptoms associated with a good prognosis,” he said.

It’s also important to note, he said, that about 40% of children do not outgrow their insomnia symptoms in the transition to adolescence and are at risk of developing mental health disorders later on during early adulthood.

Reached for comment, Nitun Verma, MD, a spokesperson for the American Academy of Sleep Medicine, said: “There is a connection with mood and anxiety disorders with sleep, especially insomnia. This is a good reminder that reviewing someone’s sleep habits should always be a part of assessing someone’s mental health.”

A version of this article first appeared on Medscape.com.

Insomnia in childhood persists into adulthood and may raise the risk for internalizing disorders in young adults, new research indicates. However, insomnia symptoms in childhood that remit in the transition to adolescence do not confer increased risk of mood or anxiety disorders later on, the study found.

“As insomnia symptoms may precipitate or maintain internalizing disorders, our findings further reinforce the need for early sleep interventions to prevent future mental health disorders,” said lead investigator Julio Fernandez-Mendoza, PhD, associate professor at Penn State University, Hershey.

He presented his research at Virtual SLEEP 2021, the 35th annual meeting of the Associated Professional Sleep Societies.
 

Results ‘very clear’

The findings are based on data from the Penn State Child Cohort, a longitudinal, population-based sample of 700 children with a median age of 9 years, including 421 who were followed up 8 years later as adolescents (median age, 16 years) and 502 who were followed up 15 years later as young adults (median age, 24 years).

The data are “very clear that the risk of having internalizing disorders in young adulthood associated with having persistent insomnia symptoms, since childhood through adolescence into young adulthood,” Dr. Fernandez-Mendoza said in his presentation.

A persistent developmental trajectory was associated with a threefold increased risk of adult internalizing disorder (hazard ratio, 3.19).

The risk of having an internalizing disorder in young adulthood associated with newly developing (incident) insomnia symptoms is about twofold higher (HR, 1.94), whereas the risk associated with the waxing and waning pattern of insomnia is 1.5-fold (HR, 1.53) higher and only marginally significant, he reported.

An equally important finding, said Dr. Fernandez-Mendoza, is that those who had remitted insomnia symptoms in the transition to adolescence and throughout young adulthood were not at increased risk of having an internalizing disorder in young adulthood.

“Insomnia symptoms in a persistent manner associated with long-term adverse mental health outcomes, but remission of those insomnia symptoms associated with a good prognosis,” he said.

It’s also important to note, he said, that about 40% of children do not outgrow their insomnia symptoms in the transition to adolescence and are at risk of developing mental health disorders later on during early adulthood.

Reached for comment, Nitun Verma, MD, a spokesperson for the American Academy of Sleep Medicine, said: “There is a connection with mood and anxiety disorders with sleep, especially insomnia. This is a good reminder that reviewing someone’s sleep habits should always be a part of assessing someone’s mental health.”

A version of this article first appeared on Medscape.com.

Insomnia in childhood persists into adulthood and may raise the risk for internalizing disorders in young adults, new research indicates. However, insomnia symptoms in childhood that remit in the transition to adolescence do not confer increased risk of mood or anxiety disorders later on, the study found.

“As insomnia symptoms may precipitate or maintain internalizing disorders, our findings further reinforce the need for early sleep interventions to prevent future mental health disorders,” said lead investigator Julio Fernandez-Mendoza, PhD, associate professor at Penn State University, Hershey.

He presented his research at Virtual SLEEP 2021, the 35th annual meeting of the Associated Professional Sleep Societies.
 

Results ‘very clear’

The findings are based on data from the Penn State Child Cohort, a longitudinal, population-based sample of 700 children with a median age of 9 years, including 421 who were followed up 8 years later as adolescents (median age, 16 years) and 502 who were followed up 15 years later as young adults (median age, 24 years).

The data are “very clear that the risk of having internalizing disorders in young adulthood associated with having persistent insomnia symptoms, since childhood through adolescence into young adulthood,” Dr. Fernandez-Mendoza said in his presentation.

A persistent developmental trajectory was associated with a threefold increased risk of adult internalizing disorder (hazard ratio, 3.19).

The risk of having an internalizing disorder in young adulthood associated with newly developing (incident) insomnia symptoms is about twofold higher (HR, 1.94), whereas the risk associated with the waxing and waning pattern of insomnia is 1.5-fold (HR, 1.53) higher and only marginally significant, he reported.

An equally important finding, said Dr. Fernandez-Mendoza, is that those who had remitted insomnia symptoms in the transition to adolescence and throughout young adulthood were not at increased risk of having an internalizing disorder in young adulthood.

“Insomnia symptoms in a persistent manner associated with long-term adverse mental health outcomes, but remission of those insomnia symptoms associated with a good prognosis,” he said.

It’s also important to note, he said, that about 40% of children do not outgrow their insomnia symptoms in the transition to adolescence and are at risk of developing mental health disorders later on during early adulthood.

Reached for comment, Nitun Verma, MD, a spokesperson for the American Academy of Sleep Medicine, said: “There is a connection with mood and anxiety disorders with sleep, especially insomnia. This is a good reminder that reviewing someone’s sleep habits should always be a part of assessing someone’s mental health.”

A version of this article first appeared on Medscape.com.

The relationship between adherence and benefit for those prescribed continuous positive airway pressure (CPAP) devices is clear. However, a Medicare-reimbursement rule that demands adherence blind to circumstances appears to be denying access to many low-income patients, according to an analysis delivered at the annual health policy and advocacy conference sponsored by the American College of Chest Physicians.

Over the past several years, adherence to CPAP has improved substantially following a series of studies that demonstrated the device must be used at least 4 hours per night to achieve improved outcomes. Medicare defines adherence as using the device more than 4 hours per night for 70% of nights (21 nights) during a consecutive 30-day period any time in the first 3 months of initial usage.

However, the studies that show improved adherence show a lag among those in the lowest income quartile, according to Sairam Parthasarathy, MD, director of the Center for Sleep and Circadian Sciences at the University of Arizona, Tucson.

When patients are followed for a year after being prescribed CPAP, the lag for the low-income patients is not seen immediately. Rather, adherence studies show a steady climb in adherence in all income groups initially, but ”right at 90 days there is a marked change,” said Dr. Parthasarathy.

This change happens to coincide with Medicare policy that denies reimbursement for CPAP after 90 days if patients are not using CPAP at least 4 hours per night, which is the threshold associated with benefit.

The correlation between this policy and income disparity is “observational” rather than proven, but Dr. Parthasarathy is confident it is valid. He believes it is a prime example of a health inequity driven by poorly conceived policy.

“The 90-day rule needs to go,” he said, calling the choice of threshold “man-made.” He added: “This is the only disease condition for which a therapy is withheld if it is not used according to some magical threshold. I cannot think of a more draconian policy.”

In an effort to illustrate the problem, he likened this policy to withholding insulin in a diabetes patient judged nonadherent because of a persistently elevated Hb1Ac.

At 90 days, adherence rates remain at a relatively early point in their upwards trajectory in all income groups. One year later, adherence rates are more than twice as high in the highest income relative to the lowest quartile and approaching twofold greater in quartiles 2 and 3.

“It takes time to get used to these devices,” Dr. Parthasarathy explained. Given studies demonstrating that “more is better” with CPAP, whether measured by sleep scales or quality of life, Dr. Parthasarathy advocates strategies to improve adherence, but he questioned an approach that penalizes low-income patients for a definition of nonadherence at an arbitrary point in time. He suggested it is just one example of health policies that ultimately penalize individuals with lower incomes.

“There are millions of dollars spent every year on understanding the genetics of disease, but the biggest influence on how long you live is the ZIP code of where you live,” said Dr. Parthasarathy, referring to ZIP codes as a surrogate for socioeconomic status.

This is not to imply, however, that genetics are irrelevant, Dr. Parthasarathy said. He pointed to data linking genetic traits that determine melanin levels and circadian rhythms. He noted one genotype associated with later bedtimes that is more commonly found in African-Americans and Hispanics. This has relevance to a variety of sleep disorders and other health conditions, but it might serve as a fundamental disadvantage for children with this genotype, Dr. Parthasarathy maintained. He cited a study conducted at his center that found Hispanic children sleep on average 30 minutes less than White children (Sleep Med 2016;18:61-6). The reason was simple. Hispanic children went to bed 30 minutes later but rose at the same time.

The later bedtimes and reduced sleep could potentially be one obstacle among many, such as the need for lower-income patients to hold several jobs, that prevent these patients from becoming accustomed to CPAP at the same speed as wealthier patients, according to Dr. Parthasarathy.

The current Medicare policy that withholds CPAP on the basis of a single definition of nonadherence appears to lead directly to an inequity in treatment of sleep apnea, he maintained. Dr. Parthasarathy, who was a coauthor of a recently published paper on addressing disparities in sleep health (Chest 2021;159:1232-40), described this issue as part of a larger problem of the failure to deliver health care that is sensitive to the cultural and racial differences underlying these inequities.

Kathleen Sarmiento, MD, FCCP, director, VISN 21 Sleep Clinical Resource Hub for the San Francisco VA Health Care System, agreed. “This type of issue is exactly what our committee would like to address,” said Dr. Sarmiento, a member of the CHEST Health Policy and Advocacy Committee and the moderator of the session in which Dr. Parthasarathy presented his data.

Courtesy Dr. Sarmiento

The relationship between adherence and benefit for those prescribed continuous positive airway pressure (CPAP) devices is clear. However, a Medicare-reimbursement rule that demands adherence blind to circumstances appears to be denying access to many low-income patients, according to an analysis delivered at the annual health policy and advocacy conference sponsored by the American College of Chest Physicians.

Over the past several years, adherence to CPAP has improved substantially following a series of studies that demonstrated the device must be used at least 4 hours per night to achieve improved outcomes. Medicare defines adherence as using the device more than 4 hours per night for 70% of nights (21 nights) during a consecutive 30-day period any time in the first 3 months of initial usage.

However, the studies that show improved adherence show a lag among those in the lowest income quartile, according to Sairam Parthasarathy, MD, director of the Center for Sleep and Circadian Sciences at the University of Arizona, Tucson.

When patients are followed for a year after being prescribed CPAP, the lag for the low-income patients is not seen immediately. Rather, adherence studies show a steady climb in adherence in all income groups initially, but ”right at 90 days there is a marked change,” said Dr. Parthasarathy.

This change happens to coincide with Medicare policy that denies reimbursement for CPAP after 90 days if patients are not using CPAP at least 4 hours per night, which is the threshold associated with benefit.

The correlation between this policy and income disparity is “observational” rather than proven, but Dr. Parthasarathy is confident it is valid. He believes it is a prime example of a health inequity driven by poorly conceived policy.

“The 90-day rule needs to go,” he said, calling the choice of threshold “man-made.” He added: “This is the only disease condition for which a therapy is withheld if it is not used according to some magical threshold. I cannot think of a more draconian policy.”

In an effort to illustrate the problem, he likened this policy to withholding insulin in a diabetes patient judged nonadherent because of a persistently elevated Hb1Ac.

At 90 days, adherence rates remain at a relatively early point in their upwards trajectory in all income groups. One year later, adherence rates are more than twice as high in the highest income relative to the lowest quartile and approaching twofold greater in quartiles 2 and 3.

“It takes time to get used to these devices,” Dr. Parthasarathy explained. Given studies demonstrating that “more is better” with CPAP, whether measured by sleep scales or quality of life, Dr. Parthasarathy advocates strategies to improve adherence, but he questioned an approach that penalizes low-income patients for a definition of nonadherence at an arbitrary point in time. He suggested it is just one example of health policies that ultimately penalize individuals with lower incomes.

“There are millions of dollars spent every year on understanding the genetics of disease, but the biggest influence on how long you live is the ZIP code of where you live,” said Dr. Parthasarathy, referring to ZIP codes as a surrogate for socioeconomic status.

This is not to imply, however, that genetics are irrelevant, Dr. Parthasarathy said. He pointed to data linking genetic traits that determine melanin levels and circadian rhythms. He noted one genotype associated with later bedtimes that is more commonly found in African-Americans and Hispanics. This has relevance to a variety of sleep disorders and other health conditions, but it might serve as a fundamental disadvantage for children with this genotype, Dr. Parthasarathy maintained. He cited a study conducted at his center that found Hispanic children sleep on average 30 minutes less than White children (Sleep Med 2016;18:61-6). The reason was simple. Hispanic children went to bed 30 minutes later but rose at the same time.

The later bedtimes and reduced sleep could potentially be one obstacle among many, such as the need for lower-income patients to hold several jobs, that prevent these patients from becoming accustomed to CPAP at the same speed as wealthier patients, according to Dr. Parthasarathy.

The current Medicare policy that withholds CPAP on the basis of a single definition of nonadherence appears to lead directly to an inequity in treatment of sleep apnea, he maintained. Dr. Parthasarathy, who was a coauthor of a recently published paper on addressing disparities in sleep health (Chest 2021;159:1232-40), described this issue as part of a larger problem of the failure to deliver health care that is sensitive to the cultural and racial differences underlying these inequities.

Kathleen Sarmiento, MD, FCCP, director, VISN 21 Sleep Clinical Resource Hub for the San Francisco VA Health Care System, agreed. “This type of issue is exactly what our committee would like to address,” said Dr. Sarmiento, a member of the CHEST Health Policy and Advocacy Committee and the moderator of the session in which Dr. Parthasarathy presented his data.

Courtesy Dr. Sarmiento

The relationship between adherence and benefit for those prescribed continuous positive airway pressure (CPAP) devices is clear. However, a Medicare-reimbursement rule that demands adherence blind to circumstances appears to be denying access to many low-income patients, according to an analysis delivered at the annual health policy and advocacy conference sponsored by the American College of Chest Physicians.

Over the past several years, adherence to CPAP has improved substantially following a series of studies that demonstrated the device must be used at least 4 hours per night to achieve improved outcomes. Medicare defines adherence as using the device more than 4 hours per night for 70% of nights (21 nights) during a consecutive 30-day period any time in the first 3 months of initial usage.

However, the studies that show improved adherence show a lag among those in the lowest income quartile, according to Sairam Parthasarathy, MD, director of the Center for Sleep and Circadian Sciences at the University of Arizona, Tucson.

When patients are followed for a year after being prescribed CPAP, the lag for the low-income patients is not seen immediately. Rather, adherence studies show a steady climb in adherence in all income groups initially, but ”right at 90 days there is a marked change,” said Dr. Parthasarathy.

This change happens to coincide with Medicare policy that denies reimbursement for CPAP after 90 days if patients are not using CPAP at least 4 hours per night, which is the threshold associated with benefit.

The correlation between this policy and income disparity is “observational” rather than proven, but Dr. Parthasarathy is confident it is valid. He believes it is a prime example of a health inequity driven by poorly conceived policy.

“The 90-day rule needs to go,” he said, calling the choice of threshold “man-made.” He added: “This is the only disease condition for which a therapy is withheld if it is not used according to some magical threshold. I cannot think of a more draconian policy.”

In an effort to illustrate the problem, he likened this policy to withholding insulin in a diabetes patient judged nonadherent because of a persistently elevated Hb1Ac.

At 90 days, adherence rates remain at a relatively early point in their upwards trajectory in all income groups. One year later, adherence rates are more than twice as high in the highest income relative to the lowest quartile and approaching twofold greater in quartiles 2 and 3.

“It takes time to get used to these devices,” Dr. Parthasarathy explained. Given studies demonstrating that “more is better” with CPAP, whether measured by sleep scales or quality of life, Dr. Parthasarathy advocates strategies to improve adherence, but he questioned an approach that penalizes low-income patients for a definition of nonadherence at an arbitrary point in time. He suggested it is just one example of health policies that ultimately penalize individuals with lower incomes.

“There are millions of dollars spent every year on understanding the genetics of disease, but the biggest influence on how long you live is the ZIP code of where you live,” said Dr. Parthasarathy, referring to ZIP codes as a surrogate for socioeconomic status.

This is not to imply, however, that genetics are irrelevant, Dr. Parthasarathy said. He pointed to data linking genetic traits that determine melanin levels and circadian rhythms. He noted one genotype associated with later bedtimes that is more commonly found in African-Americans and Hispanics. This has relevance to a variety of sleep disorders and other health conditions, but it might serve as a fundamental disadvantage for children with this genotype, Dr. Parthasarathy maintained. He cited a study conducted at his center that found Hispanic children sleep on average 30 minutes less than White children (Sleep Med 2016;18:61-6). The reason was simple. Hispanic children went to bed 30 minutes later but rose at the same time.

The later bedtimes and reduced sleep could potentially be one obstacle among many, such as the need for lower-income patients to hold several jobs, that prevent these patients from becoming accustomed to CPAP at the same speed as wealthier patients, according to Dr. Parthasarathy.

The current Medicare policy that withholds CPAP on the basis of a single definition of nonadherence appears to lead directly to an inequity in treatment of sleep apnea, he maintained. Dr. Parthasarathy, who was a coauthor of a recently published paper on addressing disparities in sleep health (Chest 2021;159:1232-40), described this issue as part of a larger problem of the failure to deliver health care that is sensitive to the cultural and racial differences underlying these inequities.

Kathleen Sarmiento, MD, FCCP, director, VISN 21 Sleep Clinical Resource Hub for the San Francisco VA Health Care System, agreed. “This type of issue is exactly what our committee would like to address,” said Dr. Sarmiento, a member of the CHEST Health Policy and Advocacy Committee and the moderator of the session in which Dr. Parthasarathy presented his data.

Courtesy Dr. Sarmiento

Pandemic smoking: More or less?

The COVID-19 pandemic has changed a lot of habits in people, for better or worse. Some people may have turned to food and alcohol for comfort, while others started on health kicks to emerge from the ordeal as new people. Well, the same can be said about smokers.

artisteer/Getty Images

New evidence comes from a survey conducted from May to July 2020 of 694 current and former smokers with an average age of 53 years. All had been hospitalized prior to the pandemic and had previously participated in clinical trials to for smoking cessation in Boston, Nashville, and Pittsburgh hospitals.

Researchers found that 32% of participants smoked more, 37% smoked less, and 31% made no change in their smoking habits. By the time of the survey, 28% of former smokers had relapsed. Although 68% of the participants believed smoking increased the risk of getting COVID-19, that still didn’t stop some people from smoking more. Why?

Respondents “might have increased their smoking due to stress and boredom. On the other hand, the fear of catching COVID might have led them to cut down or quit smoking,” said lead author Nancy A. Rigotti, MD. “Even before the pandemic, tobacco smoking was the leading preventable cause of death in the United States. COVID-19 has given smokers yet another good reason to stop smoking.”

This creates an opportunity for physicians to preach the gospel to smokers about their vulnerability to respiratory disease in hopes of getting them to quit for good. We just wish the same could be said for all of our excessive pandemic online shopping.
 

3,000 years and just one pair of genomes to wear

Men and women are different. We’ll give you a moment to pick your jaw off the ground.

It makes sense though, the sexes being different, especially when you look at the broader animal kingdom. The males and females of many species are slightly different when it comes to size and shape, but there’s a big question that literally only anthropologists have asked: Were human males and females more different in the past than they are today?

Leonard Mukooli/Pixabay

To be more specific, some scientists believe that males and females grew more similar when humans shifted from a hunter-gatherer lifestyle to a farming-based lifestyle, as agriculture encouraged a more equitable division of labor. Others believe that the differences come down to random chance.

Researchers from Penn State University analyzed genomic data from over 350,000 males and females stored in the UK Biobank and looked at the recent (within the last ~3,000 years; post-agriculture adoption in Britain) evolutionary histories of these loci. Height, body mass, hip circumference, body fat percentage, and waist circumference were analyzed, and while there were thousands of differences in the genomes, only one trait occurred more frequently during that time period: Females gained a significantly higher body fat content than males.

It’s a sad day then for the millions of people who were big fans of the “farming caused men and women to become more similar” theory. Count the LOTME crew among them. Be honest: Wouldn’t life be so much simpler if men and women were exactly the same? Just think about it, no more arguments about leaving the toilet seat up. It’d be worth it just for that.
 

Proteins don’t lie

Research published in Open Biology shows that the human brain contains 14,315 different proteins. The team conducting that study wanted to find out which organ was the most similar to the old brain box, so they did protein counts for the 32 other major tissue types, including heart, salivary gland, lung, spleen, and endometrium.

Gerd Altmann/Pixabay

The tissue with the most proteins in common with the center of human intelligence? You’re thinking it has to be colon at this point, right? We were sure it was going to be colon, but it’s not.

The winner, with 13,442 shared proteins, is the testes. The testes have 15,687 proteins, of which 85.7% are shared with the brain. The researchers, sadly, did not provide protein counts for the other tissue types, but we bet colon was a close second.
 

Dreaming about COVID?

We thought we were the only ones who have been having crazy dreams lately. Each one seems crazier and more vivid than the one before. Have you been having weird dreams lately?

Unsplash/@spanic

This is likely your brain’s coping mechanism to handle your pandemic stress, according to Dr. Erik Hoel of Tufts University. Dreams that are crazy and scary might make real life seem lighter and simpler. He calls it the “overfitted brain hypothesis.”

“It is their very strangeness that gives them their biological function,” Dr. Hoel said. It literally makes you feel like COVID-19 and lockdowns aren’t as scary as they seem.

We always knew our minds were powerful things. Apparently, your brain gets tired of everyday familiarity just like you do, and it creates crazy dreams to keep things interesting.

Just remember: That recurring dream that you’re back in college and missing 10 assignments is there to help you, not scare you! Even though it is pretty scary. 

Pandemic smoking: More or less?

The COVID-19 pandemic has changed a lot of habits in people, for better or worse. Some people may have turned to food and alcohol for comfort, while others started on health kicks to emerge from the ordeal as new people. Well, the same can be said about smokers.

artisteer/Getty Images

New evidence comes from a survey conducted from May to July 2020 of 694 current and former smokers with an average age of 53 years. All had been hospitalized prior to the pandemic and had previously participated in clinical trials to for smoking cessation in Boston, Nashville, and Pittsburgh hospitals.

Researchers found that 32% of participants smoked more, 37% smoked less, and 31% made no change in their smoking habits. By the time of the survey, 28% of former smokers had relapsed. Although 68% of the participants believed smoking increased the risk of getting COVID-19, that still didn’t stop some people from smoking more. Why?

Respondents “might have increased their smoking due to stress and boredom. On the other hand, the fear of catching COVID might have led them to cut down or quit smoking,” said lead author Nancy A. Rigotti, MD. “Even before the pandemic, tobacco smoking was the leading preventable cause of death in the United States. COVID-19 has given smokers yet another good reason to stop smoking.”

This creates an opportunity for physicians to preach the gospel to smokers about their vulnerability to respiratory disease in hopes of getting them to quit for good. We just wish the same could be said for all of our excessive pandemic online shopping.
 

3,000 years and just one pair of genomes to wear

Men and women are different. We’ll give you a moment to pick your jaw off the ground.

It makes sense though, the sexes being different, especially when you look at the broader animal kingdom. The males and females of many species are slightly different when it comes to size and shape, but there’s a big question that literally only anthropologists have asked: Were human males and females more different in the past than they are today?

Leonard Mukooli/Pixabay

To be more specific, some scientists believe that males and females grew more similar when humans shifted from a hunter-gatherer lifestyle to a farming-based lifestyle, as agriculture encouraged a more equitable division of labor. Others believe that the differences come down to random chance.

Researchers from Penn State University analyzed genomic data from over 350,000 males and females stored in the UK Biobank and looked at the recent (within the last ~3,000 years; post-agriculture adoption in Britain) evolutionary histories of these loci. Height, body mass, hip circumference, body fat percentage, and waist circumference were analyzed, and while there were thousands of differences in the genomes, only one trait occurred more frequently during that time period: Females gained a significantly higher body fat content than males.

It’s a sad day then for the millions of people who were big fans of the “farming caused men and women to become more similar” theory. Count the LOTME crew among them. Be honest: Wouldn’t life be so much simpler if men and women were exactly the same? Just think about it, no more arguments about leaving the toilet seat up. It’d be worth it just for that.
 

Proteins don’t lie

Research published in Open Biology shows that the human brain contains 14,315 different proteins. The team conducting that study wanted to find out which organ was the most similar to the old brain box, so they did protein counts for the 32 other major tissue types, including heart, salivary gland, lung, spleen, and endometrium.

Gerd Altmann/Pixabay

The tissue with the most proteins in common with the center of human intelligence? You’re thinking it has to be colon at this point, right? We were sure it was going to be colon, but it’s not.

The winner, with 13,442 shared proteins, is the testes. The testes have 15,687 proteins, of which 85.7% are shared with the brain. The researchers, sadly, did not provide protein counts for the other tissue types, but we bet colon was a close second.
 

Dreaming about COVID?

We thought we were the only ones who have been having crazy dreams lately. Each one seems crazier and more vivid than the one before. Have you been having weird dreams lately?

Unsplash/@spanic

This is likely your brain’s coping mechanism to handle your pandemic stress, according to Dr. Erik Hoel of Tufts University. Dreams that are crazy and scary might make real life seem lighter and simpler. He calls it the “overfitted brain hypothesis.”

“It is their very strangeness that gives them their biological function,” Dr. Hoel said. It literally makes you feel like COVID-19 and lockdowns aren’t as scary as they seem.

We always knew our minds were powerful things. Apparently, your brain gets tired of everyday familiarity just like you do, and it creates crazy dreams to keep things interesting.

Just remember: That recurring dream that you’re back in college and missing 10 assignments is there to help you, not scare you! Even though it is pretty scary. 

Pandemic smoking: More or less?

The COVID-19 pandemic has changed a lot of habits in people, for better or worse. Some people may have turned to food and alcohol for comfort, while others started on health kicks to emerge from the ordeal as new people. Well, the same can be said about smokers.

artisteer/Getty Images

New evidence comes from a survey conducted from May to July 2020 of 694 current and former smokers with an average age of 53 years. All had been hospitalized prior to the pandemic and had previously participated in clinical trials to for smoking cessation in Boston, Nashville, and Pittsburgh hospitals.

Researchers found that 32% of participants smoked more, 37% smoked less, and 31% made no change in their smoking habits. By the time of the survey, 28% of former smokers had relapsed. Although 68% of the participants believed smoking increased the risk of getting COVID-19, that still didn’t stop some people from smoking more. Why?

Respondents “might have increased their smoking due to stress and boredom. On the other hand, the fear of catching COVID might have led them to cut down or quit smoking,” said lead author Nancy A. Rigotti, MD. “Even before the pandemic, tobacco smoking was the leading preventable cause of death in the United States. COVID-19 has given smokers yet another good reason to stop smoking.”

This creates an opportunity for physicians to preach the gospel to smokers about their vulnerability to respiratory disease in hopes of getting them to quit for good. We just wish the same could be said for all of our excessive pandemic online shopping.
 

3,000 years and just one pair of genomes to wear

Men and women are different. We’ll give you a moment to pick your jaw off the ground.

It makes sense though, the sexes being different, especially when you look at the broader animal kingdom. The males and females of many species are slightly different when it comes to size and shape, but there’s a big question that literally only anthropologists have asked: Were human males and females more different in the past than they are today?

Leonard Mukooli/Pixabay

To be more specific, some scientists believe that males and females grew more similar when humans shifted from a hunter-gatherer lifestyle to a farming-based lifestyle, as agriculture encouraged a more equitable division of labor. Others believe that the differences come down to random chance.

Researchers from Penn State University analyzed genomic data from over 350,000 males and females stored in the UK Biobank and looked at the recent (within the last ~3,000 years; post-agriculture adoption in Britain) evolutionary histories of these loci. Height, body mass, hip circumference, body fat percentage, and waist circumference were analyzed, and while there were thousands of differences in the genomes, only one trait occurred more frequently during that time period: Females gained a significantly higher body fat content than males.

It’s a sad day then for the millions of people who were big fans of the “farming caused men and women to become more similar” theory. Count the LOTME crew among them. Be honest: Wouldn’t life be so much simpler if men and women were exactly the same? Just think about it, no more arguments about leaving the toilet seat up. It’d be worth it just for that.
 

Proteins don’t lie

Research published in Open Biology shows that the human brain contains 14,315 different proteins. The team conducting that study wanted to find out which organ was the most similar to the old brain box, so they did protein counts for the 32 other major tissue types, including heart, salivary gland, lung, spleen, and endometrium.

Gerd Altmann/Pixabay

The tissue with the most proteins in common with the center of human intelligence? You’re thinking it has to be colon at this point, right? We were sure it was going to be colon, but it’s not.

The winner, with 13,442 shared proteins, is the testes. The testes have 15,687 proteins, of which 85.7% are shared with the brain. The researchers, sadly, did not provide protein counts for the other tissue types, but we bet colon was a close second.
 

Dreaming about COVID?

We thought we were the only ones who have been having crazy dreams lately. Each one seems crazier and more vivid than the one before. Have you been having weird dreams lately?

Unsplash/@spanic

This is likely your brain’s coping mechanism to handle your pandemic stress, according to Dr. Erik Hoel of Tufts University. Dreams that are crazy and scary might make real life seem lighter and simpler. He calls it the “overfitted brain hypothesis.”

“It is their very strangeness that gives them their biological function,” Dr. Hoel said. It literally makes you feel like COVID-19 and lockdowns aren’t as scary as they seem.

We always knew our minds were powerful things. Apparently, your brain gets tired of everyday familiarity just like you do, and it creates crazy dreams to keep things interesting.

Just remember: That recurring dream that you’re back in college and missing 10 assignments is there to help you, not scare you! Even though it is pretty scary.