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VIDEO: Public reporting of congenital heart disease outcomes should be easily understood
HOUSTON – Survival statistics, surgeon-specific experience, and complication rates are the types of information most sought by parents of children with congenital heart disease, results from a large survey suggest.
Future efforts in public reporting for congenital heart surgery outcomes should have better methods for presenting the data in a valid, easily interpreted format, explained study investigator Mallory L. Irons, MD, an integrated cardiac surgery resident at the Hospital of the University of Pennsylvania, Philadelphia.
“We’re doing a good job of public reporting currently, but what we’re doing is not meeting the needs of all of our stakeholders – in this case, the parents of children with congenital heart disease,” Dr. Irons said in an interview at the annual meeting of the Society of Thoracic Surgeons. “The optimal public reporting scheme still has yet to be determined.”
Dr. Irons reported having no financial disclosures.
The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel
HOUSTON – Survival statistics, surgeon-specific experience, and complication rates are the types of information most sought by parents of children with congenital heart disease, results from a large survey suggest.
Future efforts in public reporting for congenital heart surgery outcomes should have better methods for presenting the data in a valid, easily interpreted format, explained study investigator Mallory L. Irons, MD, an integrated cardiac surgery resident at the Hospital of the University of Pennsylvania, Philadelphia.
“We’re doing a good job of public reporting currently, but what we’re doing is not meeting the needs of all of our stakeholders – in this case, the parents of children with congenital heart disease,” Dr. Irons said in an interview at the annual meeting of the Society of Thoracic Surgeons. “The optimal public reporting scheme still has yet to be determined.”
Dr. Irons reported having no financial disclosures.
The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel
HOUSTON – Survival statistics, surgeon-specific experience, and complication rates are the types of information most sought by parents of children with congenital heart disease, results from a large survey suggest.
Future efforts in public reporting for congenital heart surgery outcomes should have better methods for presenting the data in a valid, easily interpreted format, explained study investigator Mallory L. Irons, MD, an integrated cardiac surgery resident at the Hospital of the University of Pennsylvania, Philadelphia.
“We’re doing a good job of public reporting currently, but what we’re doing is not meeting the needs of all of our stakeholders – in this case, the parents of children with congenital heart disease,” Dr. Irons said in an interview at the annual meeting of the Society of Thoracic Surgeons. “The optimal public reporting scheme still has yet to be determined.”
Dr. Irons reported having no financial disclosures.
The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel
FROM THE STS ANNUAL MEETING HOUSTON
After TAVR, 1 in 10 Medicare patients need permanent pacemaker
HOUSTON – About 1 in 10 Medicare patients require implantation of a permanent pacemaker following transcatheter aortic valve replacement, results from a large analysis showed.
“There is conflicting evidence and some debate over permanent pacemaker placement following transcatheter aortic valve replacement – whether it has a protective or adverse effect, and how often it takes place,” study investigator Fenton H. McCarthy, MD, said in an interview at the annual meeting of the Society of Thoracic Surgeons.
One recent study found that permanent pacemaker placement within 30 days post TAVR was found in 6.7% of patients undergoing balloon-expanding or self-expanding valve implantation, and is associated with increased mortality and hospitalizations (JACC Cardiovasc Interv. 2016 Nov 14;9[21]:2189-2199).
To evaluate the relationship between permanent pacemaker implantation and long-term patient outcomes among Medicare beneficiaries undergoing TAVR, Dr. McCarthy, a cardiothoracic surgery fellow at the University of Pennsylvania, Philadelphia, and his associates used Medicare carrier claims and Medicare Provider Analysis and Review files to identify 14,305 TAVR patients between January 2011 and December 2013.
The researchers used univariate Kaplan survival estimates and multivariable models to analyze survival, readmission and risk factors for pacemaker implantation.
The mean age of the 14,305 TAVR patients studied was 83 years, and 11% received a permanent pacemaker after TAVR. Of these, 9% received the pacemaker at index hospitalization, 1% at 30 days after implant, 0.5% at 90 days after implant, and 1% at 1 year after implant. Patient age of greater than 90 years was a significant predictor of pacemaker placement, with an odds ratio of 1.7 (P less than .01).
Dr. McCarthy and his associates observed that the readmission rates for pacemaker placement and no pacemaker placement at index hospitalization were similar at 30 days (21% vs. 19%, respectively), at 90 days (33% vs. 31%) and at 1 year (43% in both groups of patients).
In addition, Kaplan Meier estimates revealed no significant difference in long-term survival for patients with pacemaker placement within 30 days of TAVR, while multivariate Cox proportional hazard modeling revealed that pacemaker placement is not a predictor of long-term mortality (hazard ratio, 1.03; P = .65).
“This was the largest study to evaluate the question of incidence and effect of permanent pacemaker in the transcatheter aortic valve replacement population in the United States,” Dr. McCarthy said. “The size of our data set and the fact that the Medicare database includes all types of patients, regardless of trial participation, study or registry, is a strength of this study. Some other studies have used different inclusion and exclusion criteria. We used broad inclusion criteria and evaluated patients from as many different centers as possible.”
A key limitation of the study, he said, was that the researchers were unable to determine whether a patient received a balloon-expanding or self-expanding TAVR.
Dr. McCarthy reported having no financial disclosures.
HOUSTON – About 1 in 10 Medicare patients require implantation of a permanent pacemaker following transcatheter aortic valve replacement, results from a large analysis showed.
“There is conflicting evidence and some debate over permanent pacemaker placement following transcatheter aortic valve replacement – whether it has a protective or adverse effect, and how often it takes place,” study investigator Fenton H. McCarthy, MD, said in an interview at the annual meeting of the Society of Thoracic Surgeons.
One recent study found that permanent pacemaker placement within 30 days post TAVR was found in 6.7% of patients undergoing balloon-expanding or self-expanding valve implantation, and is associated with increased mortality and hospitalizations (JACC Cardiovasc Interv. 2016 Nov 14;9[21]:2189-2199).
To evaluate the relationship between permanent pacemaker implantation and long-term patient outcomes among Medicare beneficiaries undergoing TAVR, Dr. McCarthy, a cardiothoracic surgery fellow at the University of Pennsylvania, Philadelphia, and his associates used Medicare carrier claims and Medicare Provider Analysis and Review files to identify 14,305 TAVR patients between January 2011 and December 2013.
The researchers used univariate Kaplan survival estimates and multivariable models to analyze survival, readmission and risk factors for pacemaker implantation.
The mean age of the 14,305 TAVR patients studied was 83 years, and 11% received a permanent pacemaker after TAVR. Of these, 9% received the pacemaker at index hospitalization, 1% at 30 days after implant, 0.5% at 90 days after implant, and 1% at 1 year after implant. Patient age of greater than 90 years was a significant predictor of pacemaker placement, with an odds ratio of 1.7 (P less than .01).
Dr. McCarthy and his associates observed that the readmission rates for pacemaker placement and no pacemaker placement at index hospitalization were similar at 30 days (21% vs. 19%, respectively), at 90 days (33% vs. 31%) and at 1 year (43% in both groups of patients).
In addition, Kaplan Meier estimates revealed no significant difference in long-term survival for patients with pacemaker placement within 30 days of TAVR, while multivariate Cox proportional hazard modeling revealed that pacemaker placement is not a predictor of long-term mortality (hazard ratio, 1.03; P = .65).
“This was the largest study to evaluate the question of incidence and effect of permanent pacemaker in the transcatheter aortic valve replacement population in the United States,” Dr. McCarthy said. “The size of our data set and the fact that the Medicare database includes all types of patients, regardless of trial participation, study or registry, is a strength of this study. Some other studies have used different inclusion and exclusion criteria. We used broad inclusion criteria and evaluated patients from as many different centers as possible.”
A key limitation of the study, he said, was that the researchers were unable to determine whether a patient received a balloon-expanding or self-expanding TAVR.
Dr. McCarthy reported having no financial disclosures.
HOUSTON – About 1 in 10 Medicare patients require implantation of a permanent pacemaker following transcatheter aortic valve replacement, results from a large analysis showed.
“There is conflicting evidence and some debate over permanent pacemaker placement following transcatheter aortic valve replacement – whether it has a protective or adverse effect, and how often it takes place,” study investigator Fenton H. McCarthy, MD, said in an interview at the annual meeting of the Society of Thoracic Surgeons.
One recent study found that permanent pacemaker placement within 30 days post TAVR was found in 6.7% of patients undergoing balloon-expanding or self-expanding valve implantation, and is associated with increased mortality and hospitalizations (JACC Cardiovasc Interv. 2016 Nov 14;9[21]:2189-2199).
To evaluate the relationship between permanent pacemaker implantation and long-term patient outcomes among Medicare beneficiaries undergoing TAVR, Dr. McCarthy, a cardiothoracic surgery fellow at the University of Pennsylvania, Philadelphia, and his associates used Medicare carrier claims and Medicare Provider Analysis and Review files to identify 14,305 TAVR patients between January 2011 and December 2013.
The researchers used univariate Kaplan survival estimates and multivariable models to analyze survival, readmission and risk factors for pacemaker implantation.
The mean age of the 14,305 TAVR patients studied was 83 years, and 11% received a permanent pacemaker after TAVR. Of these, 9% received the pacemaker at index hospitalization, 1% at 30 days after implant, 0.5% at 90 days after implant, and 1% at 1 year after implant. Patient age of greater than 90 years was a significant predictor of pacemaker placement, with an odds ratio of 1.7 (P less than .01).
Dr. McCarthy and his associates observed that the readmission rates for pacemaker placement and no pacemaker placement at index hospitalization were similar at 30 days (21% vs. 19%, respectively), at 90 days (33% vs. 31%) and at 1 year (43% in both groups of patients).
In addition, Kaplan Meier estimates revealed no significant difference in long-term survival for patients with pacemaker placement within 30 days of TAVR, while multivariate Cox proportional hazard modeling revealed that pacemaker placement is not a predictor of long-term mortality (hazard ratio, 1.03; P = .65).
“This was the largest study to evaluate the question of incidence and effect of permanent pacemaker in the transcatheter aortic valve replacement population in the United States,” Dr. McCarthy said. “The size of our data set and the fact that the Medicare database includes all types of patients, regardless of trial participation, study or registry, is a strength of this study. Some other studies have used different inclusion and exclusion criteria. We used broad inclusion criteria and evaluated patients from as many different centers as possible.”
A key limitation of the study, he said, was that the researchers were unable to determine whether a patient received a balloon-expanding or self-expanding TAVR.
Dr. McCarthy reported having no financial disclosures.
Key clinical point:
Major finding: Pacemaker placement is not a predictor of long-term mortality (hazard ratio, 1.03; P = .65).
Data source: A study of 14,305 Medicare beneficiaries who underwent TAVR between January 2011 and December 2013.
Disclosures: Dr. McCarthy reported having no financial disclosures.
SAVR an option for elderly with aortic stenosis
HOUSTON – Surgical aortic valve replacement can be performed in intermediate-risk elderly patients with an operative mortality rate of 4.1%, which is better than expected, according to results from a large multicenter analysis. However, the rate of in-hospital stroke was 5.4% – twice what was expected.
“This is most likely secondary to neurologic assessment [that was conducted] for all patients postoperatively,” Vinod H. Thourani, MD, said at the annual meeting of the Society of Thoracic Surgeons.
The findings come from an in-depth analysis of SAVR outcomes in patients who participated in the Placement of Aortic Transcatheter Valves trial, known as PARTNER 2A. Conducted from December 2011 to November 2013, PARTNER 2A evaluated 2,032 medium-risk patients with aortic stenosis who were randomized to SAVR or transcatheter aortic valve replacement (TAVR) in 57 North American centers and found no significant difference in the 2-year rate of death or disabling stroke (N Engl J Med. 2016 Apr 28;3749[17]:1609-20).
Dr. Thourani’s analysis focused on the 937 patients who underwent SAVR. The main objectives were to describe operative mortality and hospital morbidities compared with STS benchmarks, describe time-related mortality and stroke including preoperative predictors for these outcomes, evaluate the effect of concomitant procedures on mortality and hospital morbidities, and evaluate longitudinal valve performance after SAVR.
The average age of these patients was 82 years, 45% were female, and their mean STS risk score was 5.8. In addition, 26% had prior coronary artery bypass surgery, 10% had a previous stroke, and 12% had previous pacemaker placement. Of the 30% of patients with chronic obstructive pulmonary disease, 9.6% were oxygen dependent going into the operating room, reported Dr. Thourani, one of the PARTNER 2A investigators, and a cardiothoracic surgeon at Emory University, Atlanta.
Most of the patients (85%) had a full sternotomy, while 15% had a mini sternotomy. Isolated AVR was done in 79% of patients, 15% of patients had AVR plus CABG, and 6% had AVR and other concomitant procedures. The mean coronary bypass time for isolated AVR was 98 minutes, and rose to a mean of 129 minutes when a concomitant procedure was added. The mean cross-clamp time was 69 minutes, and rose to a mean of 95 minutes when a concomitant procedure was added.
The investigators observed that all-cause operative mortality was 4.1%, which is lower than STS predicted-risk models. At the same time, mortality for AVR plus a concomitant procedure was 5%, followed by isolated AVR (4.2%) and AVR plus CABG plus a concomitant procedure (2.9%). The rate of in-hospital stroke was 5.4% and the rate of in-hospital deep sternal wound infection was 0.8%. At 2 years postoperatively, mortality was 17% among those who underwent isolated AVR, 18% among those who underwent AVR plus CABG, and 21% among those who underwent AVR plus a concomitant procedure, differences that did not reach statistical significance. The rate of stroke at 2 years also was similar between groups: 12% among those who underwent isolated AVR, 11% in those who underwent AVR plus a concomitant procedure, and 8.2% in those who underwent AVR plus CABG.
The main risk factor for early death after SAVR was longer procedure time (P less than .0001), while risk factors for later deaths included cachexia (P = .02), lower ejection fraction (P = .01), higher creatinine (P = .03), coronary artery disease (P = .03), and smaller prostheses (P = .01)
Dr. Thourani and his associates also found that 33% of patients had severe prosthesis-patient mismatch, yet they had survival rates similar to the rates of those without severe prosthesis-patient mismatch.
“From this adjudicated, prospectively collected data in the contemporary era, SAVR can be performed in intermediate-risk elderly patients with mortality commensurate with national benchmarks,” he concluded. “Continued surveillance of these patients remains extremely important.”
Dr. Thourani disclosed that he is a consultant for and has received research support from Edwards Lifesciences. Other authors of the study reported having numerous relevant financial disclosures.
This analysis of the surgical arm of the PARTNER 2A trial reveals respectable outcome for those so-called intermediaterisk patients with severe symptomatic aortic stenosis. The fact that mortality at 2 years was similar between the surgical and the catheter arm of the trial (upward of 17%), speaks of the multiple comorbidities present in these patients (N Engl J Med. 
This analysis of the surgical arm of the PARTNER 2A trial reveals respectable outcome for those so-called intermediaterisk patients with severe symptomatic aortic stenosis. The fact that mortality at 2 years was similar between the surgical and the catheter arm of the trial (upward of 17%), speaks of the multiple comorbidities present in these patients (N Engl J Med.
This analysis of the surgical arm of the PARTNER 2A trial reveals respectable outcome for those so-called intermediaterisk patients with severe symptomatic aortic stenosis. The fact that mortality at 2 years was similar between the surgical and the catheter arm of the trial (upward of 17%), speaks of the multiple comorbidities present in these patients (N Engl J Med.
HOUSTON – Surgical aortic valve replacement can be performed in intermediate-risk elderly patients with an operative mortality rate of 4.1%, which is better than expected, according to results from a large multicenter analysis. However, the rate of in-hospital stroke was 5.4% – twice what was expected.
“This is most likely secondary to neurologic assessment [that was conducted] for all patients postoperatively,” Vinod H. Thourani, MD, said at the annual meeting of the Society of Thoracic Surgeons.
The findings come from an in-depth analysis of SAVR outcomes in patients who participated in the Placement of Aortic Transcatheter Valves trial, known as PARTNER 2A. Conducted from December 2011 to November 2013, PARTNER 2A evaluated 2,032 medium-risk patients with aortic stenosis who were randomized to SAVR or transcatheter aortic valve replacement (TAVR) in 57 North American centers and found no significant difference in the 2-year rate of death or disabling stroke (N Engl J Med. 2016 Apr 28;3749[17]:1609-20).
Dr. Thourani’s analysis focused on the 937 patients who underwent SAVR. The main objectives were to describe operative mortality and hospital morbidities compared with STS benchmarks, describe time-related mortality and stroke including preoperative predictors for these outcomes, evaluate the effect of concomitant procedures on mortality and hospital morbidities, and evaluate longitudinal valve performance after SAVR.
The average age of these patients was 82 years, 45% were female, and their mean STS risk score was 5.8. In addition, 26% had prior coronary artery bypass surgery, 10% had a previous stroke, and 12% had previous pacemaker placement. Of the 30% of patients with chronic obstructive pulmonary disease, 9.6% were oxygen dependent going into the operating room, reported Dr. Thourani, one of the PARTNER 2A investigators, and a cardiothoracic surgeon at Emory University, Atlanta.
Most of the patients (85%) had a full sternotomy, while 15% had a mini sternotomy. Isolated AVR was done in 79% of patients, 15% of patients had AVR plus CABG, and 6% had AVR and other concomitant procedures. The mean coronary bypass time for isolated AVR was 98 minutes, and rose to a mean of 129 minutes when a concomitant procedure was added. The mean cross-clamp time was 69 minutes, and rose to a mean of 95 minutes when a concomitant procedure was added.
The investigators observed that all-cause operative mortality was 4.1%, which is lower than STS predicted-risk models. At the same time, mortality for AVR plus a concomitant procedure was 5%, followed by isolated AVR (4.2%) and AVR plus CABG plus a concomitant procedure (2.9%). The rate of in-hospital stroke was 5.4% and the rate of in-hospital deep sternal wound infection was 0.8%. At 2 years postoperatively, mortality was 17% among those who underwent isolated AVR, 18% among those who underwent AVR plus CABG, and 21% among those who underwent AVR plus a concomitant procedure, differences that did not reach statistical significance. The rate of stroke at 2 years also was similar between groups: 12% among those who underwent isolated AVR, 11% in those who underwent AVR plus a concomitant procedure, and 8.2% in those who underwent AVR plus CABG.
The main risk factor for early death after SAVR was longer procedure time (P less than .0001), while risk factors for later deaths included cachexia (P = .02), lower ejection fraction (P = .01), higher creatinine (P = .03), coronary artery disease (P = .03), and smaller prostheses (P = .01)
Dr. Thourani and his associates also found that 33% of patients had severe prosthesis-patient mismatch, yet they had survival rates similar to the rates of those without severe prosthesis-patient mismatch.
“From this adjudicated, prospectively collected data in the contemporary era, SAVR can be performed in intermediate-risk elderly patients with mortality commensurate with national benchmarks,” he concluded. “Continued surveillance of these patients remains extremely important.”
Dr. Thourani disclosed that he is a consultant for and has received research support from Edwards Lifesciences. Other authors of the study reported having numerous relevant financial disclosures.
HOUSTON – Surgical aortic valve replacement can be performed in intermediate-risk elderly patients with an operative mortality rate of 4.1%, which is better than expected, according to results from a large multicenter analysis. However, the rate of in-hospital stroke was 5.4% – twice what was expected.
“This is most likely secondary to neurologic assessment [that was conducted] for all patients postoperatively,” Vinod H. Thourani, MD, said at the annual meeting of the Society of Thoracic Surgeons.
The findings come from an in-depth analysis of SAVR outcomes in patients who participated in the Placement of Aortic Transcatheter Valves trial, known as PARTNER 2A. Conducted from December 2011 to November 2013, PARTNER 2A evaluated 2,032 medium-risk patients with aortic stenosis who were randomized to SAVR or transcatheter aortic valve replacement (TAVR) in 57 North American centers and found no significant difference in the 2-year rate of death or disabling stroke (N Engl J Med. 2016 Apr 28;3749[17]:1609-20).
Dr. Thourani’s analysis focused on the 937 patients who underwent SAVR. The main objectives were to describe operative mortality and hospital morbidities compared with STS benchmarks, describe time-related mortality and stroke including preoperative predictors for these outcomes, evaluate the effect of concomitant procedures on mortality and hospital morbidities, and evaluate longitudinal valve performance after SAVR.
The average age of these patients was 82 years, 45% were female, and their mean STS risk score was 5.8. In addition, 26% had prior coronary artery bypass surgery, 10% had a previous stroke, and 12% had previous pacemaker placement. Of the 30% of patients with chronic obstructive pulmonary disease, 9.6% were oxygen dependent going into the operating room, reported Dr. Thourani, one of the PARTNER 2A investigators, and a cardiothoracic surgeon at Emory University, Atlanta.
Most of the patients (85%) had a full sternotomy, while 15% had a mini sternotomy. Isolated AVR was done in 79% of patients, 15% of patients had AVR plus CABG, and 6% had AVR and other concomitant procedures. The mean coronary bypass time for isolated AVR was 98 minutes, and rose to a mean of 129 minutes when a concomitant procedure was added. The mean cross-clamp time was 69 minutes, and rose to a mean of 95 minutes when a concomitant procedure was added.
The investigators observed that all-cause operative mortality was 4.1%, which is lower than STS predicted-risk models. At the same time, mortality for AVR plus a concomitant procedure was 5%, followed by isolated AVR (4.2%) and AVR plus CABG plus a concomitant procedure (2.9%). The rate of in-hospital stroke was 5.4% and the rate of in-hospital deep sternal wound infection was 0.8%. At 2 years postoperatively, mortality was 17% among those who underwent isolated AVR, 18% among those who underwent AVR plus CABG, and 21% among those who underwent AVR plus a concomitant procedure, differences that did not reach statistical significance. The rate of stroke at 2 years also was similar between groups: 12% among those who underwent isolated AVR, 11% in those who underwent AVR plus a concomitant procedure, and 8.2% in those who underwent AVR plus CABG.
The main risk factor for early death after SAVR was longer procedure time (P less than .0001), while risk factors for later deaths included cachexia (P = .02), lower ejection fraction (P = .01), higher creatinine (P = .03), coronary artery disease (P = .03), and smaller prostheses (P = .01)
Dr. Thourani and his associates also found that 33% of patients had severe prosthesis-patient mismatch, yet they had survival rates similar to the rates of those without severe prosthesis-patient mismatch.
“From this adjudicated, prospectively collected data in the contemporary era, SAVR can be performed in intermediate-risk elderly patients with mortality commensurate with national benchmarks,” he concluded. “Continued surveillance of these patients remains extremely important.”
Dr. Thourani disclosed that he is a consultant for and has received research support from Edwards Lifesciences. Other authors of the study reported having numerous relevant financial disclosures.
AT THE STS ANNUAL MEETING
Key clinical point:
Major finding: All-cause operative mortality was 4.1%, which is lower than STS predicted risk models.
Data source: A study of 937 medium-risk patients with aortic stenosis who were randomized to SAVR in the PARTNER 2A trial.
Disclosures: Dr. Thourani is a consultant for and has received research support from Edwards Lifesciences. Other authors of the study reported having numerous relevant financial disclosures.
STICHES boosts CABG role in severe LV dysfunction
SNOWMASS, COLO. – Coronary artery bypass graft surgery in patients with severe ischemic left ventricular dysfunction is overdue for an upgrade in status in the American College of Cardiology/American Heart Association guidelines on the strength of the landmark STICH trial and its extended follow-up stage known as STICHES, according to Vinod H. Thourani, MD.
Currently, the guidelines give CABG in this large and growing population a class IIb recommendation, meaning it “might be considered.” This undervalues the study’s core lesson: “STICHES showed a clear survival benefit with CABG, so this most likely should become a class IIa recommendation,” Dr. Thourani said at the Annual Cardiovascular Conference at Snowmass.
He went on to describe how he applies the key study findings to individual patients.
At 5 and 10 years of follow-up, the probability of all-cause mortality was reduced by 14% and 16%, respectively, in the CABG group. The surgery provided on average an 18-month extension of life. The price paid for the CABG benefit was a 3.6% mortality rate at 30 days; however, this was overcome by the 2-year mark, at which point survival in the CABG group surpassed that in controls. Thereafter, the all-cause mortality gap between the two groups continued to widen for the duration of follow-up.
For the composite endpoint of all-cause mortality or cardiovascular hospitalization, the CABG group enjoyed a 26% relative risk reduction, compared with optimal medical management alone at 5 years, and a 28% reduction in risk at 10 years. The two study groups diverged in terms of risk of cardiovascular hospitalization after only 3 months.
CABG provided a reduction in the risk of cardiovascular death that was consistent across all ages. In contrast, the reduction in all-cause mortality was not, since a higher proportion of deaths in older patients came from cancer and other noncardiovascular causes (Circulation. 2016 Nov 1;134[18]:1314-24).
There have been no randomized, controlled trials of percutaneous coronary intervention in patients with heart failure.
“An interesting finding in STICHES was that medical therapy had a much higher 10-year all-cause mortality the younger the patient was. So CABG particularly benefits those who are at a younger age – in this study, age 60 or less. As you get older, say, at 80 years of age, I’m not sure there’s a huge benefit in all-cause mortality at that point,” said Dr. Thourani, professor of surgery and medicine, and codirector of the structural heart and valve center at Emory University in Atlanta.
In a STICH substudy, roughly half of participants underwent presurgical myocardial viability testing via single-photon emission CT and/or dobutamine echocardiography. The investigators found that the results didn’t predict mortality benefit for CABG (N Engl J Med. 2011 Apr 28;364[17]:1617-25).
More recently, however, other investigators have reported MRI to have prognostic value. For example, Belgian investigators showed that medical therapy in patients with ischemic heart failure and dysfunctional but viable myocardium on delayed-enhanced MRI was associated with a 4.56-fold increased likelihood of mortality during 3 years of follow-up, compared with complete revascularization via CABG (J Am Coll Cardiol. 2012 Feb 28;59[9]:825-35).
“This observation has been useful for me,” Dr. Thourani said. “My own personal practice is if I have good targets, I don’t do viability testing, but if I have really bad targets where I know I’m going to have a tough time sewing grafts, I try to get an MRI for viability testing.”
One important lesson of STICH is that all patients with heart failure and a low left ventricular ejection fraction should have a coronary angiogram, even if they are free of ischemia on noninvasive testing and have no angina. That’s because the patients enrolled in STICH had little or no angina, the surgeon continued.
These STICH-type patients will benefit greatly from a heart team assessment factoring in an individual’s Society of Thoracic Surgeons’ predicted risk score, based on age, comorbidities, and other factors. For example, if a patient’s STS risk score with CABG is 0.7%, that’s a strong argument for opting for the surgery, since the 30-day operative mortality in STICH was 3.6%. If, on the other hand, the STS score is greater than 7%, that’s a tougher call.
“I think it’s really important that a heart team assessment includes a noninvasive cardiologist as well as an interventional cardiologist and cardiac surgeon because I think interventionalists and cardiac surgeons sometimes get a little goofy in their assessment of these patients,” Dr. Thourani said.
Patients with a low ejection fraction and coronary artery disease who are deemed poor candidates for CABG should be evaluated for a mechanical circulatory support device or a heart transplant.
“I think that’s something we don’t think about enough, quite honestly,” he said.
Dr. Thourani reported serving as a consultant to Abbott Vascular, Edwards Lifesciences, and Gore, and receiving research grants from numerous companies.
SNOWMASS, COLO. – Coronary artery bypass graft surgery in patients with severe ischemic left ventricular dysfunction is overdue for an upgrade in status in the American College of Cardiology/American Heart Association guidelines on the strength of the landmark STICH trial and its extended follow-up stage known as STICHES, according to Vinod H. Thourani, MD.
Currently, the guidelines give CABG in this large and growing population a class IIb recommendation, meaning it “might be considered.” This undervalues the study’s core lesson: “STICHES showed a clear survival benefit with CABG, so this most likely should become a class IIa recommendation,” Dr. Thourani said at the Annual Cardiovascular Conference at Snowmass.
He went on to describe how he applies the key study findings to individual patients.
At 5 and 10 years of follow-up, the probability of all-cause mortality was reduced by 14% and 16%, respectively, in the CABG group. The surgery provided on average an 18-month extension of life. The price paid for the CABG benefit was a 3.6% mortality rate at 30 days; however, this was overcome by the 2-year mark, at which point survival in the CABG group surpassed that in controls. Thereafter, the all-cause mortality gap between the two groups continued to widen for the duration of follow-up.
For the composite endpoint of all-cause mortality or cardiovascular hospitalization, the CABG group enjoyed a 26% relative risk reduction, compared with optimal medical management alone at 5 years, and a 28% reduction in risk at 10 years. The two study groups diverged in terms of risk of cardiovascular hospitalization after only 3 months.
CABG provided a reduction in the risk of cardiovascular death that was consistent across all ages. In contrast, the reduction in all-cause mortality was not, since a higher proportion of deaths in older patients came from cancer and other noncardiovascular causes (Circulation. 2016 Nov 1;134[18]:1314-24).
There have been no randomized, controlled trials of percutaneous coronary intervention in patients with heart failure.
“An interesting finding in STICHES was that medical therapy had a much higher 10-year all-cause mortality the younger the patient was. So CABG particularly benefits those who are at a younger age – in this study, age 60 or less. As you get older, say, at 80 years of age, I’m not sure there’s a huge benefit in all-cause mortality at that point,” said Dr. Thourani, professor of surgery and medicine, and codirector of the structural heart and valve center at Emory University in Atlanta.
In a STICH substudy, roughly half of participants underwent presurgical myocardial viability testing via single-photon emission CT and/or dobutamine echocardiography. The investigators found that the results didn’t predict mortality benefit for CABG (N Engl J Med. 2011 Apr 28;364[17]:1617-25).
More recently, however, other investigators have reported MRI to have prognostic value. For example, Belgian investigators showed that medical therapy in patients with ischemic heart failure and dysfunctional but viable myocardium on delayed-enhanced MRI was associated with a 4.56-fold increased likelihood of mortality during 3 years of follow-up, compared with complete revascularization via CABG (J Am Coll Cardiol. 2012 Feb 28;59[9]:825-35).
“This observation has been useful for me,” Dr. Thourani said. “My own personal practice is if I have good targets, I don’t do viability testing, but if I have really bad targets where I know I’m going to have a tough time sewing grafts, I try to get an MRI for viability testing.”
One important lesson of STICH is that all patients with heart failure and a low left ventricular ejection fraction should have a coronary angiogram, even if they are free of ischemia on noninvasive testing and have no angina. That’s because the patients enrolled in STICH had little or no angina, the surgeon continued.
These STICH-type patients will benefit greatly from a heart team assessment factoring in an individual’s Society of Thoracic Surgeons’ predicted risk score, based on age, comorbidities, and other factors. For example, if a patient’s STS risk score with CABG is 0.7%, that’s a strong argument for opting for the surgery, since the 30-day operative mortality in STICH was 3.6%. If, on the other hand, the STS score is greater than 7%, that’s a tougher call.
“I think it’s really important that a heart team assessment includes a noninvasive cardiologist as well as an interventional cardiologist and cardiac surgeon because I think interventionalists and cardiac surgeons sometimes get a little goofy in their assessment of these patients,” Dr. Thourani said.
Patients with a low ejection fraction and coronary artery disease who are deemed poor candidates for CABG should be evaluated for a mechanical circulatory support device or a heart transplant.
“I think that’s something we don’t think about enough, quite honestly,” he said.
Dr. Thourani reported serving as a consultant to Abbott Vascular, Edwards Lifesciences, and Gore, and receiving research grants from numerous companies.
SNOWMASS, COLO. – Coronary artery bypass graft surgery in patients with severe ischemic left ventricular dysfunction is overdue for an upgrade in status in the American College of Cardiology/American Heart Association guidelines on the strength of the landmark STICH trial and its extended follow-up stage known as STICHES, according to Vinod H. Thourani, MD.
Currently, the guidelines give CABG in this large and growing population a class IIb recommendation, meaning it “might be considered.” This undervalues the study’s core lesson: “STICHES showed a clear survival benefit with CABG, so this most likely should become a class IIa recommendation,” Dr. Thourani said at the Annual Cardiovascular Conference at Snowmass.
He went on to describe how he applies the key study findings to individual patients.
At 5 and 10 years of follow-up, the probability of all-cause mortality was reduced by 14% and 16%, respectively, in the CABG group. The surgery provided on average an 18-month extension of life. The price paid for the CABG benefit was a 3.6% mortality rate at 30 days; however, this was overcome by the 2-year mark, at which point survival in the CABG group surpassed that in controls. Thereafter, the all-cause mortality gap between the two groups continued to widen for the duration of follow-up.
For the composite endpoint of all-cause mortality or cardiovascular hospitalization, the CABG group enjoyed a 26% relative risk reduction, compared with optimal medical management alone at 5 years, and a 28% reduction in risk at 10 years. The two study groups diverged in terms of risk of cardiovascular hospitalization after only 3 months.
CABG provided a reduction in the risk of cardiovascular death that was consistent across all ages. In contrast, the reduction in all-cause mortality was not, since a higher proportion of deaths in older patients came from cancer and other noncardiovascular causes (Circulation. 2016 Nov 1;134[18]:1314-24).
There have been no randomized, controlled trials of percutaneous coronary intervention in patients with heart failure.
“An interesting finding in STICHES was that medical therapy had a much higher 10-year all-cause mortality the younger the patient was. So CABG particularly benefits those who are at a younger age – in this study, age 60 or less. As you get older, say, at 80 years of age, I’m not sure there’s a huge benefit in all-cause mortality at that point,” said Dr. Thourani, professor of surgery and medicine, and codirector of the structural heart and valve center at Emory University in Atlanta.
In a STICH substudy, roughly half of participants underwent presurgical myocardial viability testing via single-photon emission CT and/or dobutamine echocardiography. The investigators found that the results didn’t predict mortality benefit for CABG (N Engl J Med. 2011 Apr 28;364[17]:1617-25).
More recently, however, other investigators have reported MRI to have prognostic value. For example, Belgian investigators showed that medical therapy in patients with ischemic heart failure and dysfunctional but viable myocardium on delayed-enhanced MRI was associated with a 4.56-fold increased likelihood of mortality during 3 years of follow-up, compared with complete revascularization via CABG (J Am Coll Cardiol. 2012 Feb 28;59[9]:825-35).
“This observation has been useful for me,” Dr. Thourani said. “My own personal practice is if I have good targets, I don’t do viability testing, but if I have really bad targets where I know I’m going to have a tough time sewing grafts, I try to get an MRI for viability testing.”
One important lesson of STICH is that all patients with heart failure and a low left ventricular ejection fraction should have a coronary angiogram, even if they are free of ischemia on noninvasive testing and have no angina. That’s because the patients enrolled in STICH had little or no angina, the surgeon continued.
These STICH-type patients will benefit greatly from a heart team assessment factoring in an individual’s Society of Thoracic Surgeons’ predicted risk score, based on age, comorbidities, and other factors. For example, if a patient’s STS risk score with CABG is 0.7%, that’s a strong argument for opting for the surgery, since the 30-day operative mortality in STICH was 3.6%. If, on the other hand, the STS score is greater than 7%, that’s a tougher call.
“I think it’s really important that a heart team assessment includes a noninvasive cardiologist as well as an interventional cardiologist and cardiac surgeon because I think interventionalists and cardiac surgeons sometimes get a little goofy in their assessment of these patients,” Dr. Thourani said.
Patients with a low ejection fraction and coronary artery disease who are deemed poor candidates for CABG should be evaluated for a mechanical circulatory support device or a heart transplant.
“I think that’s something we don’t think about enough, quite honestly,” he said.
Dr. Thourani reported serving as a consultant to Abbott Vascular, Edwards Lifesciences, and Gore, and receiving research grants from numerous companies.
EXPERT ANALYSIS AT THE CARDIOVASCULAR CONFERENCE AT SNOWMASS
Parents seek easily understood public reporting of cardiac outcome measures
HOUSTON – Parents of children with congenital heart disease cite survival statistics, surgeon-specific experience, and complication rates as the three most important congenital heart surgery outcome measures to report publicly, results from a large survey show.
“Recently, an increasing demand for the public reporting of pediatric heart surgery outcomes has led to the development of several different reporting schemes, including a hospital star rating system and procedure-specific mortality data tables for the Society of Thoracic Surgeons benchmark operations,” study investigator Mallory L. Irons, MD, said during a press briefing at the annual meeting of the Society of Thoracic Surgeons. “However, despite the availability of these reporting schemes, there remain unanswered questions about the optimal format and content of public reporting for pediatric heart surgery outcomes.”
“These procedures have been determined to represent more homogenous patient groups,” she said. “How data [are] presented may be just as important as the data itself. Noticeably absent from these frameworks is parent input regarding the information that may be necessary to make an informed choice about their child’s care.
“Failure to consider this perspective may contribute to suboptimal reporting and misunderstanding of the data presented. The goal of the current study was to identify parent preferences regarding the content of pediatric heart surgery outcomes reports, specifically with respect to the type of data that is included as well as the optimal format for presentation of this data.”
She and her associates developed a 43-question survey for 1,862 parents of children born with heart defects. The parents were invited to participate through member lists from patient advocacy groups Mended Little Hearts, the Pediatric Congenital Heart Association, and Sisters by Heart, and from a cohort of patients who underwent surgical correction for an STS benchmark procedure at the Children’s Hospital of Philadelphia after Jan. 1, 2007.
Of the 1,862 parents, 1,281 (69%) provided complete responses for inclusion in the final analysis. The mean age of respondents was 37 years, 92% were mothers of children with congenital heart disease, and 92% were white. “Most reported household incomes in excess of $65,000 per year, but lower income households were also significantly represented,” Dr. Irons added. More than half of the children (57%) were diagnosed with CHD prenatally, 63% underwent an initial repair in the neonatal period, and 60% of families were referred to a cardiac surgical center by a physician, while 23% were transferred from their birth hospital.
When the respondents were asked to rank categories of outcome measures or other types of information to include in an optimal public reporting scheme on a scale of 1 (most important) to 8 (least important), they identified survival statistics, surgeons’ experience with congenital heart surgery, and complication rates as the three most important. These preferences were stable across differences in education levels, household incomes, and race or ethnicity, Dr. Irons said.
Presented with three display formats for hospital-specific mortality rates, most parents (89%) identified a numerical procedure-based approach as the best format, and more than half (60%) identified the hospital star rating system as the worst potential format to display mortality data. These preferences also were stable across differences in education levels, household incomes, and race or ethnicity.
Dr. Irons acknowledged certain limitations of the study, including its retrospective design, and the fact that it lacked input from parents who do not have Internet access. “Similarly, the availability of the survey in English only prevents non-native English speakers from contributing,” she said. “Finally, while we have identified what types of information parents want, we must acknowledge that small case numbers limit the presentation of certain types of data, such as surgeon-specific outcomes, in a statistically meaningful way.”
In her opinion, an optimal reporting system requires a common database in which to collect and analyze data, a robust methodology for risk adjustment, and a way to compare performance across a field that is inherently heterogeneous.
“The ideal public reporting system should be valid as well as easily understood by all stakeholders,” Dr. Irons concluded. “We must recognize that just because parents want certain data, [it] does not mean that we can provide it in a meaningful, statistically valid way. Perhaps the most important takeaway from our study is the importance of involving parents and other stakeholders in the design and planning of methodologies for public reporting of congenital heart surgery outcomes. Ultimately, the optimal platform will represent a melding of what parents want, and what is statistically meaningful and valid.”
Jeffrey P. Jacobs, MD, a pediatric heart surgeon at Johns Hopkins University, Baltimore, who also chairs the STS Workforce on National Databases, characterized the study as “an extremely important paper that examines the format and structure of how it might be best to share information about cardiac surgical outcomes with patients and their families.” He said the STS “has studied multiple different strategies, and currently we use a method where we report outcomes using a categorical system of star ratings and augment that with detailed specific data with point estimates for confidence intervals. We continue to study and explore better ways to share this information with our patients and with their families.”
Dr. Irons reported having no financial disclosures.
HOUSTON – Parents of children with congenital heart disease cite survival statistics, surgeon-specific experience, and complication rates as the three most important congenital heart surgery outcome measures to report publicly, results from a large survey show.
“Recently, an increasing demand for the public reporting of pediatric heart surgery outcomes has led to the development of several different reporting schemes, including a hospital star rating system and procedure-specific mortality data tables for the Society of Thoracic Surgeons benchmark operations,” study investigator Mallory L. Irons, MD, said during a press briefing at the annual meeting of the Society of Thoracic Surgeons. “However, despite the availability of these reporting schemes, there remain unanswered questions about the optimal format and content of public reporting for pediatric heart surgery outcomes.”
“These procedures have been determined to represent more homogenous patient groups,” she said. “How data [are] presented may be just as important as the data itself. Noticeably absent from these frameworks is parent input regarding the information that may be necessary to make an informed choice about their child’s care.
“Failure to consider this perspective may contribute to suboptimal reporting and misunderstanding of the data presented. The goal of the current study was to identify parent preferences regarding the content of pediatric heart surgery outcomes reports, specifically with respect to the type of data that is included as well as the optimal format for presentation of this data.”
She and her associates developed a 43-question survey for 1,862 parents of children born with heart defects. The parents were invited to participate through member lists from patient advocacy groups Mended Little Hearts, the Pediatric Congenital Heart Association, and Sisters by Heart, and from a cohort of patients who underwent surgical correction for an STS benchmark procedure at the Children’s Hospital of Philadelphia after Jan. 1, 2007.
Of the 1,862 parents, 1,281 (69%) provided complete responses for inclusion in the final analysis. The mean age of respondents was 37 years, 92% were mothers of children with congenital heart disease, and 92% were white. “Most reported household incomes in excess of $65,000 per year, but lower income households were also significantly represented,” Dr. Irons added. More than half of the children (57%) were diagnosed with CHD prenatally, 63% underwent an initial repair in the neonatal period, and 60% of families were referred to a cardiac surgical center by a physician, while 23% were transferred from their birth hospital.
When the respondents were asked to rank categories of outcome measures or other types of information to include in an optimal public reporting scheme on a scale of 1 (most important) to 8 (least important), they identified survival statistics, surgeons’ experience with congenital heart surgery, and complication rates as the three most important. These preferences were stable across differences in education levels, household incomes, and race or ethnicity, Dr. Irons said.
Presented with three display formats for hospital-specific mortality rates, most parents (89%) identified a numerical procedure-based approach as the best format, and more than half (60%) identified the hospital star rating system as the worst potential format to display mortality data. These preferences also were stable across differences in education levels, household incomes, and race or ethnicity.
Dr. Irons acknowledged certain limitations of the study, including its retrospective design, and the fact that it lacked input from parents who do not have Internet access. “Similarly, the availability of the survey in English only prevents non-native English speakers from contributing,” she said. “Finally, while we have identified what types of information parents want, we must acknowledge that small case numbers limit the presentation of certain types of data, such as surgeon-specific outcomes, in a statistically meaningful way.”
In her opinion, an optimal reporting system requires a common database in which to collect and analyze data, a robust methodology for risk adjustment, and a way to compare performance across a field that is inherently heterogeneous.
“The ideal public reporting system should be valid as well as easily understood by all stakeholders,” Dr. Irons concluded. “We must recognize that just because parents want certain data, [it] does not mean that we can provide it in a meaningful, statistically valid way. Perhaps the most important takeaway from our study is the importance of involving parents and other stakeholders in the design and planning of methodologies for public reporting of congenital heart surgery outcomes. Ultimately, the optimal platform will represent a melding of what parents want, and what is statistically meaningful and valid.”
Jeffrey P. Jacobs, MD, a pediatric heart surgeon at Johns Hopkins University, Baltimore, who also chairs the STS Workforce on National Databases, characterized the study as “an extremely important paper that examines the format and structure of how it might be best to share information about cardiac surgical outcomes with patients and their families.” He said the STS “has studied multiple different strategies, and currently we use a method where we report outcomes using a categorical system of star ratings and augment that with detailed specific data with point estimates for confidence intervals. We continue to study and explore better ways to share this information with our patients and with their families.”
Dr. Irons reported having no financial disclosures.
HOUSTON – Parents of children with congenital heart disease cite survival statistics, surgeon-specific experience, and complication rates as the three most important congenital heart surgery outcome measures to report publicly, results from a large survey show.
“Recently, an increasing demand for the public reporting of pediatric heart surgery outcomes has led to the development of several different reporting schemes, including a hospital star rating system and procedure-specific mortality data tables for the Society of Thoracic Surgeons benchmark operations,” study investigator Mallory L. Irons, MD, said during a press briefing at the annual meeting of the Society of Thoracic Surgeons. “However, despite the availability of these reporting schemes, there remain unanswered questions about the optimal format and content of public reporting for pediatric heart surgery outcomes.”
“These procedures have been determined to represent more homogenous patient groups,” she said. “How data [are] presented may be just as important as the data itself. Noticeably absent from these frameworks is parent input regarding the information that may be necessary to make an informed choice about their child’s care.
“Failure to consider this perspective may contribute to suboptimal reporting and misunderstanding of the data presented. The goal of the current study was to identify parent preferences regarding the content of pediatric heart surgery outcomes reports, specifically with respect to the type of data that is included as well as the optimal format for presentation of this data.”
She and her associates developed a 43-question survey for 1,862 parents of children born with heart defects. The parents were invited to participate through member lists from patient advocacy groups Mended Little Hearts, the Pediatric Congenital Heart Association, and Sisters by Heart, and from a cohort of patients who underwent surgical correction for an STS benchmark procedure at the Children’s Hospital of Philadelphia after Jan. 1, 2007.
Of the 1,862 parents, 1,281 (69%) provided complete responses for inclusion in the final analysis. The mean age of respondents was 37 years, 92% were mothers of children with congenital heart disease, and 92% were white. “Most reported household incomes in excess of $65,000 per year, but lower income households were also significantly represented,” Dr. Irons added. More than half of the children (57%) were diagnosed with CHD prenatally, 63% underwent an initial repair in the neonatal period, and 60% of families were referred to a cardiac surgical center by a physician, while 23% were transferred from their birth hospital.
When the respondents were asked to rank categories of outcome measures or other types of information to include in an optimal public reporting scheme on a scale of 1 (most important) to 8 (least important), they identified survival statistics, surgeons’ experience with congenital heart surgery, and complication rates as the three most important. These preferences were stable across differences in education levels, household incomes, and race or ethnicity, Dr. Irons said.
Presented with three display formats for hospital-specific mortality rates, most parents (89%) identified a numerical procedure-based approach as the best format, and more than half (60%) identified the hospital star rating system as the worst potential format to display mortality data. These preferences also were stable across differences in education levels, household incomes, and race or ethnicity.
Dr. Irons acknowledged certain limitations of the study, including its retrospective design, and the fact that it lacked input from parents who do not have Internet access. “Similarly, the availability of the survey in English only prevents non-native English speakers from contributing,” she said. “Finally, while we have identified what types of information parents want, we must acknowledge that small case numbers limit the presentation of certain types of data, such as surgeon-specific outcomes, in a statistically meaningful way.”
In her opinion, an optimal reporting system requires a common database in which to collect and analyze data, a robust methodology for risk adjustment, and a way to compare performance across a field that is inherently heterogeneous.
“The ideal public reporting system should be valid as well as easily understood by all stakeholders,” Dr. Irons concluded. “We must recognize that just because parents want certain data, [it] does not mean that we can provide it in a meaningful, statistically valid way. Perhaps the most important takeaway from our study is the importance of involving parents and other stakeholders in the design and planning of methodologies for public reporting of congenital heart surgery outcomes. Ultimately, the optimal platform will represent a melding of what parents want, and what is statistically meaningful and valid.”
Jeffrey P. Jacobs, MD, a pediatric heart surgeon at Johns Hopkins University, Baltimore, who also chairs the STS Workforce on National Databases, characterized the study as “an extremely important paper that examines the format and structure of how it might be best to share information about cardiac surgical outcomes with patients and their families.” He said the STS “has studied multiple different strategies, and currently we use a method where we report outcomes using a categorical system of star ratings and augment that with detailed specific data with point estimates for confidence intervals. We continue to study and explore better ways to share this information with our patients and with their families.”
Dr. Irons reported having no financial disclosures.
AT THE STS ANNUAL MEETING
Key clinical point:
Major finding: When parents of children with congenital heart disease were asked to rank categories of outcome measures or other types of information to include in an optimal public reporting scheme, they identified survival statistics, surgeons’ experience with congenital heart surgery, and complication rates as the three most important
Data source: A retrospective survey of 1,862 parents of children born with heart defects.
Disclosures: Dr. Irons reported having no financial disclosures.
Mortality may be reduced when surgical ablation for AF is done with mitral operations
HOUSTON – At the time of mitral valve repair or replacement operations, the addition of surgical ablation to treat atrial fibrillation (AF) can be performed without increased risk of mortality, results from a large cohort study has demonstrated.
“Surgical ablation for atrial fibrillation performed concomitant to mitral valve repair or replacement is accepted to reduce long-term AF rates and improve quality of life, and has recently attained a class I, level of evidence A recommendation in the recent Society of Thoracic Surgeons Guidelines,” Vinay Badhwar, MD, said in an interview. Dr. Badhwar is the lead author of the STS Guidelines and senior author of the current study on mortality following surgical ablation of AF. “Nevertheless, the direct impact of surgical ablation on operative mortality has not been studied on a large scale using robust registry data.”
In an effort to examine the impact of performing or not performing surgical ablation (SA) on mortality of contemporary mitral valve repair or replacement (MVRR) operations, Dr. Badhwar, Gordon F. Murray Professor and Chair, department of cardiovascular and thoracic surgery at West Virginia University, Morgantown, W.Va., and his associates at eight other leading centers nationwide evaluated the medical records of 88,765 MVRR patients in the STS Adult Cardiac Surgery Database between July 2011 and June 2014.
The research, presented as the Richard E. Clark award winning paper in adult cardiac surgery by study leader J. Scott Rankin, MD, professor of surgery in the department of cardiovascular and thoracic surgery at West Virginia University, included cases of tricuspid repair and coronary artery bypass grafting and assessed all STS comorbid risk variables and mitral etiology for predictors of mortality. After performing multivariable logistic regression, the researchers compared risk-adjusted odds ratios for mortality by AF type at operation and SA performance: group 1 (no AF plus no SA), group 2 (no AF plus SA), group 3 (AF plus no SA), group 4 (AF plus SA), group 5 (persistent AF plus no SA), and group 6 (persistent AF plus SA).
The median age of patients ranged from 63 to 72 years. Compared with their counterparts in other groups, patients in groups 3 and 5 were older (median age of 71 and 72 years, respectively), had worse symptoms (50% in each group had NYHA class III or IV disease), had more reoperations (30% vs. 32%), and had higher unadjusted mortalities (6.7% vs. 6.6%).
Following multivariable risk adjustment, groups 2-6 with AF history plus or minus SA were referenced to group 1 patients without AF or SA. Groups 2-4 represented the overall population, and groups 5 and 6 were patients with persistent AF. Patients with AF at the time of operation not receiving SA (groups 3 and 5) had odds ratios of 1.16 and 1.17, respectively, or an increase of 16% and 17% in relative risk of mortality (P = .004 and P = .01, respectively). In groups 4 and 6, concomitant SA reduced the AF-related mortality to a level that was statistically comparable to reference baseline group 1 without a history of AF (P = .13 and P = .21, respectively).
“The present study appears to clearly illustrate the adverse effects of AF on operative mortality following MVRR,” Dr. Badhwar said. “After thorough risk adjustment, we were impressed to learn that the relative mortality risk of mitral procedures increased by nearly 15% for either paroxysmal or persistent AF, and results were similar for the two AF types. A remote history of AF with preoperative sinus rhythm immediately prior to surgery had little effect on prognosis, and these patients appeared to have outcomes more like those without AF. In patients with active AF at the time of mitral operation, SA reduced the AF-related mortality and decreased operative mortality to levels not statistically different from patients without AF.” He added that the findings of this study support the recent STS Guidelines on Surgical Ablation published in the January 2017 edition of Annals of Thoracic Surgery (Ann Thorac Surg. 2017 Jan;103[1]:329-41). “However, the ultimate decision on whether or not to add surgical ablation must always remain between the surgeon and the patient,” he said.
Dr. Badhwar acknowledged that the study is limited by the information available in version 2.73 of the STS Adult Cardiac Surgery Database. “This does highlight the ongoing need for participants in the database to provide as much complete information as possible for all patients undergoing cardiac operations, especially those involving surgical ablation,” he said.
Dr. Badhwar reported having no financial disclosures. Dr. Rankin disclosed ties with Admedus, AtriCure, and BioStable Science and Engineering.
HOUSTON – At the time of mitral valve repair or replacement operations, the addition of surgical ablation to treat atrial fibrillation (AF) can be performed without increased risk of mortality, results from a large cohort study has demonstrated.
“Surgical ablation for atrial fibrillation performed concomitant to mitral valve repair or replacement is accepted to reduce long-term AF rates and improve quality of life, and has recently attained a class I, level of evidence A recommendation in the recent Society of Thoracic Surgeons Guidelines,” Vinay Badhwar, MD, said in an interview. Dr. Badhwar is the lead author of the STS Guidelines and senior author of the current study on mortality following surgical ablation of AF. “Nevertheless, the direct impact of surgical ablation on operative mortality has not been studied on a large scale using robust registry data.”
In an effort to examine the impact of performing or not performing surgical ablation (SA) on mortality of contemporary mitral valve repair or replacement (MVRR) operations, Dr. Badhwar, Gordon F. Murray Professor and Chair, department of cardiovascular and thoracic surgery at West Virginia University, Morgantown, W.Va., and his associates at eight other leading centers nationwide evaluated the medical records of 88,765 MVRR patients in the STS Adult Cardiac Surgery Database between July 2011 and June 2014.
The research, presented as the Richard E. Clark award winning paper in adult cardiac surgery by study leader J. Scott Rankin, MD, professor of surgery in the department of cardiovascular and thoracic surgery at West Virginia University, included cases of tricuspid repair and coronary artery bypass grafting and assessed all STS comorbid risk variables and mitral etiology for predictors of mortality. After performing multivariable logistic regression, the researchers compared risk-adjusted odds ratios for mortality by AF type at operation and SA performance: group 1 (no AF plus no SA), group 2 (no AF plus SA), group 3 (AF plus no SA), group 4 (AF plus SA), group 5 (persistent AF plus no SA), and group 6 (persistent AF plus SA).
The median age of patients ranged from 63 to 72 years. Compared with their counterparts in other groups, patients in groups 3 and 5 were older (median age of 71 and 72 years, respectively), had worse symptoms (50% in each group had NYHA class III or IV disease), had more reoperations (30% vs. 32%), and had higher unadjusted mortalities (6.7% vs. 6.6%).
Following multivariable risk adjustment, groups 2-6 with AF history plus or minus SA were referenced to group 1 patients without AF or SA. Groups 2-4 represented the overall population, and groups 5 and 6 were patients with persistent AF. Patients with AF at the time of operation not receiving SA (groups 3 and 5) had odds ratios of 1.16 and 1.17, respectively, or an increase of 16% and 17% in relative risk of mortality (P = .004 and P = .01, respectively). In groups 4 and 6, concomitant SA reduced the AF-related mortality to a level that was statistically comparable to reference baseline group 1 without a history of AF (P = .13 and P = .21, respectively).
“The present study appears to clearly illustrate the adverse effects of AF on operative mortality following MVRR,” Dr. Badhwar said. “After thorough risk adjustment, we were impressed to learn that the relative mortality risk of mitral procedures increased by nearly 15% for either paroxysmal or persistent AF, and results were similar for the two AF types. A remote history of AF with preoperative sinus rhythm immediately prior to surgery had little effect on prognosis, and these patients appeared to have outcomes more like those without AF. In patients with active AF at the time of mitral operation, SA reduced the AF-related mortality and decreased operative mortality to levels not statistically different from patients without AF.” He added that the findings of this study support the recent STS Guidelines on Surgical Ablation published in the January 2017 edition of Annals of Thoracic Surgery (Ann Thorac Surg. 2017 Jan;103[1]:329-41). “However, the ultimate decision on whether or not to add surgical ablation must always remain between the surgeon and the patient,” he said.
Dr. Badhwar acknowledged that the study is limited by the information available in version 2.73 of the STS Adult Cardiac Surgery Database. “This does highlight the ongoing need for participants in the database to provide as much complete information as possible for all patients undergoing cardiac operations, especially those involving surgical ablation,” he said.
Dr. Badhwar reported having no financial disclosures. Dr. Rankin disclosed ties with Admedus, AtriCure, and BioStable Science and Engineering.
HOUSTON – At the time of mitral valve repair or replacement operations, the addition of surgical ablation to treat atrial fibrillation (AF) can be performed without increased risk of mortality, results from a large cohort study has demonstrated.
“Surgical ablation for atrial fibrillation performed concomitant to mitral valve repair or replacement is accepted to reduce long-term AF rates and improve quality of life, and has recently attained a class I, level of evidence A recommendation in the recent Society of Thoracic Surgeons Guidelines,” Vinay Badhwar, MD, said in an interview. Dr. Badhwar is the lead author of the STS Guidelines and senior author of the current study on mortality following surgical ablation of AF. “Nevertheless, the direct impact of surgical ablation on operative mortality has not been studied on a large scale using robust registry data.”
In an effort to examine the impact of performing or not performing surgical ablation (SA) on mortality of contemporary mitral valve repair or replacement (MVRR) operations, Dr. Badhwar, Gordon F. Murray Professor and Chair, department of cardiovascular and thoracic surgery at West Virginia University, Morgantown, W.Va., and his associates at eight other leading centers nationwide evaluated the medical records of 88,765 MVRR patients in the STS Adult Cardiac Surgery Database between July 2011 and June 2014.
The research, presented as the Richard E. Clark award winning paper in adult cardiac surgery by study leader J. Scott Rankin, MD, professor of surgery in the department of cardiovascular and thoracic surgery at West Virginia University, included cases of tricuspid repair and coronary artery bypass grafting and assessed all STS comorbid risk variables and mitral etiology for predictors of mortality. After performing multivariable logistic regression, the researchers compared risk-adjusted odds ratios for mortality by AF type at operation and SA performance: group 1 (no AF plus no SA), group 2 (no AF plus SA), group 3 (AF plus no SA), group 4 (AF plus SA), group 5 (persistent AF plus no SA), and group 6 (persistent AF plus SA).
The median age of patients ranged from 63 to 72 years. Compared with their counterparts in other groups, patients in groups 3 and 5 were older (median age of 71 and 72 years, respectively), had worse symptoms (50% in each group had NYHA class III or IV disease), had more reoperations (30% vs. 32%), and had higher unadjusted mortalities (6.7% vs. 6.6%).
Following multivariable risk adjustment, groups 2-6 with AF history plus or minus SA were referenced to group 1 patients without AF or SA. Groups 2-4 represented the overall population, and groups 5 and 6 were patients with persistent AF. Patients with AF at the time of operation not receiving SA (groups 3 and 5) had odds ratios of 1.16 and 1.17, respectively, or an increase of 16% and 17% in relative risk of mortality (P = .004 and P = .01, respectively). In groups 4 and 6, concomitant SA reduced the AF-related mortality to a level that was statistically comparable to reference baseline group 1 without a history of AF (P = .13 and P = .21, respectively).
“The present study appears to clearly illustrate the adverse effects of AF on operative mortality following MVRR,” Dr. Badhwar said. “After thorough risk adjustment, we were impressed to learn that the relative mortality risk of mitral procedures increased by nearly 15% for either paroxysmal or persistent AF, and results were similar for the two AF types. A remote history of AF with preoperative sinus rhythm immediately prior to surgery had little effect on prognosis, and these patients appeared to have outcomes more like those without AF. In patients with active AF at the time of mitral operation, SA reduced the AF-related mortality and decreased operative mortality to levels not statistically different from patients without AF.” He added that the findings of this study support the recent STS Guidelines on Surgical Ablation published in the January 2017 edition of Annals of Thoracic Surgery (Ann Thorac Surg. 2017 Jan;103[1]:329-41). “However, the ultimate decision on whether or not to add surgical ablation must always remain between the surgeon and the patient,” he said.
Dr. Badhwar acknowledged that the study is limited by the information available in version 2.73 of the STS Adult Cardiac Surgery Database. “This does highlight the ongoing need for participants in the database to provide as much complete information as possible for all patients undergoing cardiac operations, especially those involving surgical ablation,” he said.
Dr. Badhwar reported having no financial disclosures. Dr. Rankin disclosed ties with Admedus, AtriCure, and BioStable Science and Engineering.
AT THE STS ANNUAL MEETING
Key clinical point:
Major finding: Adding surgical ablation to treat AF at the time of MVRR reduced the AF-related mortality to a rate that was comparable to a reference baseline group that had no history of AF.
Data source: An analysis of medical records from 88,765 MVRR patients in the STS Adult Cardiac Surgery Database between July 2011 and June 2014.
Disclosures: Dr. Badhwar reported having no financial disclosures. Dr. Rankin disclosed ties with Admedus, AtriCure, and BioStable Science and Engineering.
Early, in-hospital shunt failure common among infants
HOUSTON – Among neonates and infants who underwent shunt construction as a source of pulmonary blood flow, early, in-hospital shunt failure occurred in 7.3% of cases, results from a large retrospective study showed.
“Approximately one in seven patients who experiences cardiac surgery in the first year of life undergoes construction of a systemic to pulmonary artery shunt of some type,” one of the study investigators, Marshall L. Jacobs, MD, said in an interview. The study was presented at the annual meeting of the Society of Thoracic Surgeons.
“Early failure of such shunts is an incompletely understood phenomenon which accounts for important morbidity and mortality among infants and neonates. Much of what is known about shunt failure is based on experiences reported from individual institutions. The few multicenter studies to date have been clinical trials that focused primarily on pharmacologic strategies intended to reduce the risk of shunt failure due to thrombosis. Their utility for guiding clinical decision making has been limited. Some have been underpowered; some have had limited risk adjustment of subjects.”
Dr. Do, who presented the findings at the meeting and is currently a Congenital Heart Surgery Fellow at the Children’s Hospital of Philadelphia, and a team of 11 other investigators utilized the STS Congenital Heart Surgery Database to identify 9,172 neonates and infants who underwent shunt construction as a source of pulmonary blood flow at 118 institutions from 2010 to 2015. Criteria for shunt failure included a documented diagnosis of in-hospital shunt failure, shunt revision, or catheter-based shunt intervention. The investigators used multivariable logistic regression to evaluate risk factors for in-hospital shunt failure.
Of the 9,172 at-risk neonates and infants, 674 (7.3%) experienced early, in-hospital shunt failure. “The observed rate of early shunt failure varied across the many specific types of shunts, and was lower with systemic ventricle to pulmonary artery shunts (as in the Sano modification of the Norwood procedure) than with the systemic artery to pulmonary artery shunts,” said Dr. Jacobs, who is a cardiothoracic surgeon at Johns Hopkins University, Baltimore.
In multivariable analysis, risk factors for in-hospital shunt failure included lower weight at operation for both neonates and infants, preoperative hypercoagulable state, and the collective presence of any other STS Congenital Heart Surgery Database preoperative risk factors. Neither cardiopulmonary bypass nor single ventricle diagnosis were risk factors for shunt failure. The investigators also observed that patients with in-hospital shunt failure had significantly higher rates of operative mortality (31.9% vs. 11.1%) and major morbidity (84.4% vs. 29.4%), and longer postoperative length of stay among survivors (a median of 45 vs. 22 days).
“Understanding the characteristics of the patient groups found to be at highest risk for early shunt failure is helpful in identifying individual patients that may warrant expectant surveillance, enhanced pharmacologic management, or other strategies to reduce the risk of shunt failure,” Dr. Jacobs concluded.
“But perhaps more importantly it provides key information that may be helpful in the design and development of future clinical trials and/or collaborative quality improvement initiatives designed to reduce the cost in lives and resources that is associated with early shunt dysfunction.”
He acknowledged certain limitations of the study, including its retrospective observational design and the voluntary nature of the STS Congenital Heart Surgery Database. “In addition, some potentially important variables, such as detailed data concerning preoperative test results of coagulation assays are not collected in the STS Congenital Heart Surgery Database,” he said.
The research was supported by the STS Access & Publications Research program. The investigators reported having no financial disclosures.
HOUSTON – Among neonates and infants who underwent shunt construction as a source of pulmonary blood flow, early, in-hospital shunt failure occurred in 7.3% of cases, results from a large retrospective study showed.
“Approximately one in seven patients who experiences cardiac surgery in the first year of life undergoes construction of a systemic to pulmonary artery shunt of some type,” one of the study investigators, Marshall L. Jacobs, MD, said in an interview. The study was presented at the annual meeting of the Society of Thoracic Surgeons.
“Early failure of such shunts is an incompletely understood phenomenon which accounts for important morbidity and mortality among infants and neonates. Much of what is known about shunt failure is based on experiences reported from individual institutions. The few multicenter studies to date have been clinical trials that focused primarily on pharmacologic strategies intended to reduce the risk of shunt failure due to thrombosis. Their utility for guiding clinical decision making has been limited. Some have been underpowered; some have had limited risk adjustment of subjects.”
Dr. Do, who presented the findings at the meeting and is currently a Congenital Heart Surgery Fellow at the Children’s Hospital of Philadelphia, and a team of 11 other investigators utilized the STS Congenital Heart Surgery Database to identify 9,172 neonates and infants who underwent shunt construction as a source of pulmonary blood flow at 118 institutions from 2010 to 2015. Criteria for shunt failure included a documented diagnosis of in-hospital shunt failure, shunt revision, or catheter-based shunt intervention. The investigators used multivariable logistic regression to evaluate risk factors for in-hospital shunt failure.
Of the 9,172 at-risk neonates and infants, 674 (7.3%) experienced early, in-hospital shunt failure. “The observed rate of early shunt failure varied across the many specific types of shunts, and was lower with systemic ventricle to pulmonary artery shunts (as in the Sano modification of the Norwood procedure) than with the systemic artery to pulmonary artery shunts,” said Dr. Jacobs, who is a cardiothoracic surgeon at Johns Hopkins University, Baltimore.
In multivariable analysis, risk factors for in-hospital shunt failure included lower weight at operation for both neonates and infants, preoperative hypercoagulable state, and the collective presence of any other STS Congenital Heart Surgery Database preoperative risk factors. Neither cardiopulmonary bypass nor single ventricle diagnosis were risk factors for shunt failure. The investigators also observed that patients with in-hospital shunt failure had significantly higher rates of operative mortality (31.9% vs. 11.1%) and major morbidity (84.4% vs. 29.4%), and longer postoperative length of stay among survivors (a median of 45 vs. 22 days).
“Understanding the characteristics of the patient groups found to be at highest risk for early shunt failure is helpful in identifying individual patients that may warrant expectant surveillance, enhanced pharmacologic management, or other strategies to reduce the risk of shunt failure,” Dr. Jacobs concluded.
“But perhaps more importantly it provides key information that may be helpful in the design and development of future clinical trials and/or collaborative quality improvement initiatives designed to reduce the cost in lives and resources that is associated with early shunt dysfunction.”
He acknowledged certain limitations of the study, including its retrospective observational design and the voluntary nature of the STS Congenital Heart Surgery Database. “In addition, some potentially important variables, such as detailed data concerning preoperative test results of coagulation assays are not collected in the STS Congenital Heart Surgery Database,” he said.
The research was supported by the STS Access & Publications Research program. The investigators reported having no financial disclosures.
HOUSTON – Among neonates and infants who underwent shunt construction as a source of pulmonary blood flow, early, in-hospital shunt failure occurred in 7.3% of cases, results from a large retrospective study showed.
“Approximately one in seven patients who experiences cardiac surgery in the first year of life undergoes construction of a systemic to pulmonary artery shunt of some type,” one of the study investigators, Marshall L. Jacobs, MD, said in an interview. The study was presented at the annual meeting of the Society of Thoracic Surgeons.
“Early failure of such shunts is an incompletely understood phenomenon which accounts for important morbidity and mortality among infants and neonates. Much of what is known about shunt failure is based on experiences reported from individual institutions. The few multicenter studies to date have been clinical trials that focused primarily on pharmacologic strategies intended to reduce the risk of shunt failure due to thrombosis. Their utility for guiding clinical decision making has been limited. Some have been underpowered; some have had limited risk adjustment of subjects.”
Dr. Do, who presented the findings at the meeting and is currently a Congenital Heart Surgery Fellow at the Children’s Hospital of Philadelphia, and a team of 11 other investigators utilized the STS Congenital Heart Surgery Database to identify 9,172 neonates and infants who underwent shunt construction as a source of pulmonary blood flow at 118 institutions from 2010 to 2015. Criteria for shunt failure included a documented diagnosis of in-hospital shunt failure, shunt revision, or catheter-based shunt intervention. The investigators used multivariable logistic regression to evaluate risk factors for in-hospital shunt failure.
Of the 9,172 at-risk neonates and infants, 674 (7.3%) experienced early, in-hospital shunt failure. “The observed rate of early shunt failure varied across the many specific types of shunts, and was lower with systemic ventricle to pulmonary artery shunts (as in the Sano modification of the Norwood procedure) than with the systemic artery to pulmonary artery shunts,” said Dr. Jacobs, who is a cardiothoracic surgeon at Johns Hopkins University, Baltimore.
In multivariable analysis, risk factors for in-hospital shunt failure included lower weight at operation for both neonates and infants, preoperative hypercoagulable state, and the collective presence of any other STS Congenital Heart Surgery Database preoperative risk factors. Neither cardiopulmonary bypass nor single ventricle diagnosis were risk factors for shunt failure. The investigators also observed that patients with in-hospital shunt failure had significantly higher rates of operative mortality (31.9% vs. 11.1%) and major morbidity (84.4% vs. 29.4%), and longer postoperative length of stay among survivors (a median of 45 vs. 22 days).
“Understanding the characteristics of the patient groups found to be at highest risk for early shunt failure is helpful in identifying individual patients that may warrant expectant surveillance, enhanced pharmacologic management, or other strategies to reduce the risk of shunt failure,” Dr. Jacobs concluded.
“But perhaps more importantly it provides key information that may be helpful in the design and development of future clinical trials and/or collaborative quality improvement initiatives designed to reduce the cost in lives and resources that is associated with early shunt dysfunction.”
He acknowledged certain limitations of the study, including its retrospective observational design and the voluntary nature of the STS Congenital Heart Surgery Database. “In addition, some potentially important variables, such as detailed data concerning preoperative test results of coagulation assays are not collected in the STS Congenital Heart Surgery Database,” he said.
The research was supported by the STS Access & Publications Research program. The investigators reported having no financial disclosures.
AT THE STS ANNUAL MEETING
Key clinical point:
Major finding: Among neonates and infants who underwent shunt operations, 7.3% experienced early, in-hospital shunt failure.
Data source: A retrospective analysis of 9,172 neonates and infants who underwent shunt construction as a source of pulmonary blood flow at 118 institutions from 2010 to 2015.
Disclosures: The research was supported by the STS Access & Publications Research program. The investigators reported having no financial disclosures.
Study IDs risk factors for ideal timing of stage 2 palliation following Norwood
HOUSTON – The optimal timing of stage 2 palliation after the Norwood operation depends on certain patient-specific risk factors, but in most cases should be done around 3-4 months of age, results from a multi-center study show.
While previous studies have investigated whether early stage-2 palliation (S2P) can be performed without increased post-S2P mortality, the effect of the timing of S2P on post-Norwood mortality remains unknown, Robert “Jake” Jaquiss, MD, said in an interview in advance of the annual meeting of the Society of Thoracic Surgeons.
“There has been a lot of dispute about how early is too early for S2P,” said Dr. Jaquiss, the study’s senior author, who is professor and division chief of pediatric cardiothoracic surgery at the University of Texas Southwestern Medical Center. “That is one of the few things that is in the control of the doctor. Most of the rest of the decisions are based entirely on the condition of the patient and the patient’s specific anatomy. So the timing of S2P is something that we can truly define most always. What we want to find out is, what is the ideal timing? How early is too early? Is there such a thing as too late?”
In an effort to determine the optimal timing of S2P that both minimizes pre-S2P attrition and maximizes long-term post-S2P survival, Dr. Jaquiss and his associates at 19 other institutions evaluated data from 534 neonates diagnosed with left ventricular outflow tract obstruction that precluded adequate systemic cardiac output through the aortic valve who initially underwent a Norwood operation from 2005 to 2016.
S2P was performed in 377 patients (71%) at a mean age of 5.4 months, while 115 (22%) died after Norwood, and the rest underwent biventricular repair or heart transplantation. After S2P, 38 (10%) died, 248 (66%) underwent Fontan, and the rest were alive awaiting Fontan or underwent heart transplantation.
Risk factors for death after Norwood included requiring pre-Norwood extracorporeal membrane oxygenation (P less than .0001), birth weight of less than 2.5 kg (P less than .0001), modified Blalock-Taussig shunt vs. a right ventricle to pulmonary artery conduit (P = .0003), larger baseline right pulmonary artery diameter (P = .0002), smaller baseline mitral valve diameter (P = .0002), smaller baseline tricuspid valve diameter (P = .0001), and nonwhite race (P = .03).
Risk factors for death after S2P included lower oxygen saturation at pre-S2P clinic visit (P = .02), having moderate or severe pre-S2P right ventricular dysfunction (P = .007), younger age at S2P (P = .03), and longer post-Norwood hospital length of stay (P = .03).
The risk-adjusted, 4-year, post-Norwood survival was 72%, with a confidence interval of 67%-75%. When plotted vs. the age at S2P, risk-adjusted, 4-year, post-Norwood survival for the 534 patients was maximized by S2P at 3-6 months of age. At the same time, risk-adjusted, 4-year survival in low-risk infants was compromised only by undergoing S2P earlier than 3 months of age. In high-risk infants, survival was severely compromised, especially when undergoing S2P earlier than 6 months of age.
“The results reinforced intuitions or expectations that most of the investigators already had,” Dr. Jaquiss said. “But we are in an era where evidence-based medicine is much preferable to intuition-based medicine. I’m very confident in the findings we have. I feel more confident in suggesting that we should be planning these surgeries around 3-4 months of age in usual-risk children and also more confident in suggesting that we need to consider transplantation earlier in children who are perceived to be at high risk. There is some hope [by clinicians in] some centers that you can convert a high-risk prognosis to a lower or intermediate risk prognosis by doing the S2P earlier or at some alternative time. Our data suggests that would not be helpful.”
Dr. Jaquiss and Dr. Meza reported having no financial disclosures.
HOUSTON – The optimal timing of stage 2 palliation after the Norwood operation depends on certain patient-specific risk factors, but in most cases should be done around 3-4 months of age, results from a multi-center study show.
While previous studies have investigated whether early stage-2 palliation (S2P) can be performed without increased post-S2P mortality, the effect of the timing of S2P on post-Norwood mortality remains unknown, Robert “Jake” Jaquiss, MD, said in an interview in advance of the annual meeting of the Society of Thoracic Surgeons.
“There has been a lot of dispute about how early is too early for S2P,” said Dr. Jaquiss, the study’s senior author, who is professor and division chief of pediatric cardiothoracic surgery at the University of Texas Southwestern Medical Center. “That is one of the few things that is in the control of the doctor. Most of the rest of the decisions are based entirely on the condition of the patient and the patient’s specific anatomy. So the timing of S2P is something that we can truly define most always. What we want to find out is, what is the ideal timing? How early is too early? Is there such a thing as too late?”
In an effort to determine the optimal timing of S2P that both minimizes pre-S2P attrition and maximizes long-term post-S2P survival, Dr. Jaquiss and his associates at 19 other institutions evaluated data from 534 neonates diagnosed with left ventricular outflow tract obstruction that precluded adequate systemic cardiac output through the aortic valve who initially underwent a Norwood operation from 2005 to 2016.
S2P was performed in 377 patients (71%) at a mean age of 5.4 months, while 115 (22%) died after Norwood, and the rest underwent biventricular repair or heart transplantation. After S2P, 38 (10%) died, 248 (66%) underwent Fontan, and the rest were alive awaiting Fontan or underwent heart transplantation.
Risk factors for death after Norwood included requiring pre-Norwood extracorporeal membrane oxygenation (P less than .0001), birth weight of less than 2.5 kg (P less than .0001), modified Blalock-Taussig shunt vs. a right ventricle to pulmonary artery conduit (P = .0003), larger baseline right pulmonary artery diameter (P = .0002), smaller baseline mitral valve diameter (P = .0002), smaller baseline tricuspid valve diameter (P = .0001), and nonwhite race (P = .03).
Risk factors for death after S2P included lower oxygen saturation at pre-S2P clinic visit (P = .02), having moderate or severe pre-S2P right ventricular dysfunction (P = .007), younger age at S2P (P = .03), and longer post-Norwood hospital length of stay (P = .03).
The risk-adjusted, 4-year, post-Norwood survival was 72%, with a confidence interval of 67%-75%. When plotted vs. the age at S2P, risk-adjusted, 4-year, post-Norwood survival for the 534 patients was maximized by S2P at 3-6 months of age. At the same time, risk-adjusted, 4-year survival in low-risk infants was compromised only by undergoing S2P earlier than 3 months of age. In high-risk infants, survival was severely compromised, especially when undergoing S2P earlier than 6 months of age.
“The results reinforced intuitions or expectations that most of the investigators already had,” Dr. Jaquiss said. “But we are in an era where evidence-based medicine is much preferable to intuition-based medicine. I’m very confident in the findings we have. I feel more confident in suggesting that we should be planning these surgeries around 3-4 months of age in usual-risk children and also more confident in suggesting that we need to consider transplantation earlier in children who are perceived to be at high risk. There is some hope [by clinicians in] some centers that you can convert a high-risk prognosis to a lower or intermediate risk prognosis by doing the S2P earlier or at some alternative time. Our data suggests that would not be helpful.”
Dr. Jaquiss and Dr. Meza reported having no financial disclosures.
HOUSTON – The optimal timing of stage 2 palliation after the Norwood operation depends on certain patient-specific risk factors, but in most cases should be done around 3-4 months of age, results from a multi-center study show.
While previous studies have investigated whether early stage-2 palliation (S2P) can be performed without increased post-S2P mortality, the effect of the timing of S2P on post-Norwood mortality remains unknown, Robert “Jake” Jaquiss, MD, said in an interview in advance of the annual meeting of the Society of Thoracic Surgeons.
“There has been a lot of dispute about how early is too early for S2P,” said Dr. Jaquiss, the study’s senior author, who is professor and division chief of pediatric cardiothoracic surgery at the University of Texas Southwestern Medical Center. “That is one of the few things that is in the control of the doctor. Most of the rest of the decisions are based entirely on the condition of the patient and the patient’s specific anatomy. So the timing of S2P is something that we can truly define most always. What we want to find out is, what is the ideal timing? How early is too early? Is there such a thing as too late?”
In an effort to determine the optimal timing of S2P that both minimizes pre-S2P attrition and maximizes long-term post-S2P survival, Dr. Jaquiss and his associates at 19 other institutions evaluated data from 534 neonates diagnosed with left ventricular outflow tract obstruction that precluded adequate systemic cardiac output through the aortic valve who initially underwent a Norwood operation from 2005 to 2016.
S2P was performed in 377 patients (71%) at a mean age of 5.4 months, while 115 (22%) died after Norwood, and the rest underwent biventricular repair or heart transplantation. After S2P, 38 (10%) died, 248 (66%) underwent Fontan, and the rest were alive awaiting Fontan or underwent heart transplantation.
Risk factors for death after Norwood included requiring pre-Norwood extracorporeal membrane oxygenation (P less than .0001), birth weight of less than 2.5 kg (P less than .0001), modified Blalock-Taussig shunt vs. a right ventricle to pulmonary artery conduit (P = .0003), larger baseline right pulmonary artery diameter (P = .0002), smaller baseline mitral valve diameter (P = .0002), smaller baseline tricuspid valve diameter (P = .0001), and nonwhite race (P = .03).
Risk factors for death after S2P included lower oxygen saturation at pre-S2P clinic visit (P = .02), having moderate or severe pre-S2P right ventricular dysfunction (P = .007), younger age at S2P (P = .03), and longer post-Norwood hospital length of stay (P = .03).
The risk-adjusted, 4-year, post-Norwood survival was 72%, with a confidence interval of 67%-75%. When plotted vs. the age at S2P, risk-adjusted, 4-year, post-Norwood survival for the 534 patients was maximized by S2P at 3-6 months of age. At the same time, risk-adjusted, 4-year survival in low-risk infants was compromised only by undergoing S2P earlier than 3 months of age. In high-risk infants, survival was severely compromised, especially when undergoing S2P earlier than 6 months of age.
“The results reinforced intuitions or expectations that most of the investigators already had,” Dr. Jaquiss said. “But we are in an era where evidence-based medicine is much preferable to intuition-based medicine. I’m very confident in the findings we have. I feel more confident in suggesting that we should be planning these surgeries around 3-4 months of age in usual-risk children and also more confident in suggesting that we need to consider transplantation earlier in children who are perceived to be at high risk. There is some hope [by clinicians in] some centers that you can convert a high-risk prognosis to a lower or intermediate risk prognosis by doing the S2P earlier or at some alternative time. Our data suggests that would not be helpful.”
Dr. Jaquiss and Dr. Meza reported having no financial disclosures.
Key clinical point:
Major finding: When plotted vs. the age at stage 2 palliation, risk-adjusted, 4-year, post-Norwood survival for the 534 patients was maximized by S2P at 3-6 months of age.
Data source: A multi-institutional analysis of 534 neonates diagnosed with left ventricular outflow tract obstruction that precluded adequate systemic cardiac output through the aortic valve who initially underwent a Norwood operation from 2005 to 2016.
Disclosures: Dr. Jaquiss and Dr. Meza reported having no financial disclosures.
New thinking on septal myectomy vs. alcohol ablation for obstructive cardiomyopathy
SNOWMASS, COLO. – The first-ever national study of the impact of hospital volume on outcomes of septal myectomy versus alcohol septal ablation for treatment of obstructive hypertrophic cardiomyopathy deserves to be practice-changing, Rick A. Nishimura, MD, said at the Annual Cardiovascular Conference at Snowmass.
Prior to release of these eye-opening data, conventional thinking held that referral for percutaneous septal ablation was the preferred option for elderly, sedentary patients with lots of comorbid conditions and a limited remaining lifespan, while surgical septal myectomy was the best fix for young, active, relatively healthy patients because of its impressive durability of benefit.
Similarly, 80% of alcohol ablations took place at centers doing less than 20 cases over 9 years. But the success of the percutaneous procedure was less dependent upon large institutional volumes. Only at the lowest-volume centers, where a total of fewer than 10 of the procedures were done over 9 years, was procedural mortality significantly higher – indeed, three- to fourfold higher – than at mid- or high-volume institutions or centers of excellence, all of which had similar mortality rates. The same was true for rates of postoperative complete heart block requiring a permanent pacemaker: significantly higher only at the lowest-volume institutions, according to the investigators from Weill Cornell Medical College in New York (JAMA Cardiol. 2016 Jun 1;1[3]:324-32).
“I think the bottom line is this: for the patient who is severely symptomatic with obstruction on optimal medical therapy, septal myectomy probably offers the best chance of excellent long-term symptomatic improvement, but the mortality depends on the center and the surgical expertise there, and complications do, too. This is something good to know that we never had data on before, that if you can’t get to a center with an experienced surgeon doing myectomies, it’s reasonable to go to a center doing ablations as long as there is some experience with the procedure there,” said Dr. Nishimura, professor of cardiovascular diseases and hypertension at the Mayo Clinic in Rochester, Minn.
Of the 11,248 patients treated for obstructive hypertrophic cardiomyopathy identified by the Cornell investigators using the Agency for Healthcare Research and Quality National Inpatient Sample database, 57% got myectomy and 43% underwent ablation. During the study years ablation increased in popularity by about 50%, rising from an annual rate of 1.6 to 2.5 procedures per million per year, while myectomy declined from 2.0 to 1.5 cases per million population per year. But that’s not what’s happened at the Mayo Clinic and other hypertrophic cardiomyopathy centers of excellence.
At the Mayo Clinic, for example, the volume of septal myectomies climbed from roughly 50 procedures per year in 2000 to close to 250 in 2015. Meanwhile the rate of alcohol septal ablation procedures remained steady at fewer than 20 per year.
“With shared decision making at Mayo, surgery has gone way up,” said Dr. Nishimura. “In an experienced surgeon’s hands, operative mortality is 0.8%, the gradient improves to 3%, and 94% of patients are postoperative New York Heart Association class I or II. This lasts for decades. We have 20-, 30-, and 40-year follow-up data now showing that over 90% of patients will have an excellent symptomatic benefit and be able to return to a normal lifestyle. The septum doesn’t come back. They’re good for life. So it’s a wonderful operation.”
In contrast, catheter-based septal ablation has a 4-year rate of survival free of death, NYHA class III or IV, or myectomy of 76%.
“One in four treated patients will not benefit,” the cardiologist emphasized.
The percutaneous procedure entails instilling alcohol into the septal perforator artery supplying the area of obstruction in order to cause a localized MI. Over a period of several weeks this causes the septum to shrink, thereby relieving the outflow tract obstruction.
When the procedure fails to bring about improvement, it’s often because the patient had a very long septal perforator artery and instilling the alcohol caused a large MI, making things worse. Or the patient didn’t have a septal perforator artery, or had one with so many branches that the cardiologist couldn’t identify the right one to treat to target the septum.
Dr. Nishimura reported having no financial conflicts.
SNOWMASS, COLO. – The first-ever national study of the impact of hospital volume on outcomes of septal myectomy versus alcohol septal ablation for treatment of obstructive hypertrophic cardiomyopathy deserves to be practice-changing, Rick A. Nishimura, MD, said at the Annual Cardiovascular Conference at Snowmass.
Prior to release of these eye-opening data, conventional thinking held that referral for percutaneous septal ablation was the preferred option for elderly, sedentary patients with lots of comorbid conditions and a limited remaining lifespan, while surgical septal myectomy was the best fix for young, active, relatively healthy patients because of its impressive durability of benefit.
Similarly, 80% of alcohol ablations took place at centers doing less than 20 cases over 9 years. But the success of the percutaneous procedure was less dependent upon large institutional volumes. Only at the lowest-volume centers, where a total of fewer than 10 of the procedures were done over 9 years, was procedural mortality significantly higher – indeed, three- to fourfold higher – than at mid- or high-volume institutions or centers of excellence, all of which had similar mortality rates. The same was true for rates of postoperative complete heart block requiring a permanent pacemaker: significantly higher only at the lowest-volume institutions, according to the investigators from Weill Cornell Medical College in New York (JAMA Cardiol. 2016 Jun 1;1[3]:324-32).
“I think the bottom line is this: for the patient who is severely symptomatic with obstruction on optimal medical therapy, septal myectomy probably offers the best chance of excellent long-term symptomatic improvement, but the mortality depends on the center and the surgical expertise there, and complications do, too. This is something good to know that we never had data on before, that if you can’t get to a center with an experienced surgeon doing myectomies, it’s reasonable to go to a center doing ablations as long as there is some experience with the procedure there,” said Dr. Nishimura, professor of cardiovascular diseases and hypertension at the Mayo Clinic in Rochester, Minn.
Of the 11,248 patients treated for obstructive hypertrophic cardiomyopathy identified by the Cornell investigators using the Agency for Healthcare Research and Quality National Inpatient Sample database, 57% got myectomy and 43% underwent ablation. During the study years ablation increased in popularity by about 50%, rising from an annual rate of 1.6 to 2.5 procedures per million per year, while myectomy declined from 2.0 to 1.5 cases per million population per year. But that’s not what’s happened at the Mayo Clinic and other hypertrophic cardiomyopathy centers of excellence.
At the Mayo Clinic, for example, the volume of septal myectomies climbed from roughly 50 procedures per year in 2000 to close to 250 in 2015. Meanwhile the rate of alcohol septal ablation procedures remained steady at fewer than 20 per year.
“With shared decision making at Mayo, surgery has gone way up,” said Dr. Nishimura. “In an experienced surgeon’s hands, operative mortality is 0.8%, the gradient improves to 3%, and 94% of patients are postoperative New York Heart Association class I or II. This lasts for decades. We have 20-, 30-, and 40-year follow-up data now showing that over 90% of patients will have an excellent symptomatic benefit and be able to return to a normal lifestyle. The septum doesn’t come back. They’re good for life. So it’s a wonderful operation.”
In contrast, catheter-based septal ablation has a 4-year rate of survival free of death, NYHA class III or IV, or myectomy of 76%.
“One in four treated patients will not benefit,” the cardiologist emphasized.
The percutaneous procedure entails instilling alcohol into the septal perforator artery supplying the area of obstruction in order to cause a localized MI. Over a period of several weeks this causes the septum to shrink, thereby relieving the outflow tract obstruction.
When the procedure fails to bring about improvement, it’s often because the patient had a very long septal perforator artery and instilling the alcohol caused a large MI, making things worse. Or the patient didn’t have a septal perforator artery, or had one with so many branches that the cardiologist couldn’t identify the right one to treat to target the septum.
Dr. Nishimura reported having no financial conflicts.
SNOWMASS, COLO. – The first-ever national study of the impact of hospital volume on outcomes of septal myectomy versus alcohol septal ablation for treatment of obstructive hypertrophic cardiomyopathy deserves to be practice-changing, Rick A. Nishimura, MD, said at the Annual Cardiovascular Conference at Snowmass.
Prior to release of these eye-opening data, conventional thinking held that referral for percutaneous septal ablation was the preferred option for elderly, sedentary patients with lots of comorbid conditions and a limited remaining lifespan, while surgical septal myectomy was the best fix for young, active, relatively healthy patients because of its impressive durability of benefit.
Similarly, 80% of alcohol ablations took place at centers doing less than 20 cases over 9 years. But the success of the percutaneous procedure was less dependent upon large institutional volumes. Only at the lowest-volume centers, where a total of fewer than 10 of the procedures were done over 9 years, was procedural mortality significantly higher – indeed, three- to fourfold higher – than at mid- or high-volume institutions or centers of excellence, all of which had similar mortality rates. The same was true for rates of postoperative complete heart block requiring a permanent pacemaker: significantly higher only at the lowest-volume institutions, according to the investigators from Weill Cornell Medical College in New York (JAMA Cardiol. 2016 Jun 1;1[3]:324-32).
“I think the bottom line is this: for the patient who is severely symptomatic with obstruction on optimal medical therapy, septal myectomy probably offers the best chance of excellent long-term symptomatic improvement, but the mortality depends on the center and the surgical expertise there, and complications do, too. This is something good to know that we never had data on before, that if you can’t get to a center with an experienced surgeon doing myectomies, it’s reasonable to go to a center doing ablations as long as there is some experience with the procedure there,” said Dr. Nishimura, professor of cardiovascular diseases and hypertension at the Mayo Clinic in Rochester, Minn.
Of the 11,248 patients treated for obstructive hypertrophic cardiomyopathy identified by the Cornell investigators using the Agency for Healthcare Research and Quality National Inpatient Sample database, 57% got myectomy and 43% underwent ablation. During the study years ablation increased in popularity by about 50%, rising from an annual rate of 1.6 to 2.5 procedures per million per year, while myectomy declined from 2.0 to 1.5 cases per million population per year. But that’s not what’s happened at the Mayo Clinic and other hypertrophic cardiomyopathy centers of excellence.
At the Mayo Clinic, for example, the volume of septal myectomies climbed from roughly 50 procedures per year in 2000 to close to 250 in 2015. Meanwhile the rate of alcohol septal ablation procedures remained steady at fewer than 20 per year.
“With shared decision making at Mayo, surgery has gone way up,” said Dr. Nishimura. “In an experienced surgeon’s hands, operative mortality is 0.8%, the gradient improves to 3%, and 94% of patients are postoperative New York Heart Association class I or II. This lasts for decades. We have 20-, 30-, and 40-year follow-up data now showing that over 90% of patients will have an excellent symptomatic benefit and be able to return to a normal lifestyle. The septum doesn’t come back. They’re good for life. So it’s a wonderful operation.”
In contrast, catheter-based septal ablation has a 4-year rate of survival free of death, NYHA class III or IV, or myectomy of 76%.
“One in four treated patients will not benefit,” the cardiologist emphasized.
The percutaneous procedure entails instilling alcohol into the septal perforator artery supplying the area of obstruction in order to cause a localized MI. Over a period of several weeks this causes the septum to shrink, thereby relieving the outflow tract obstruction.
When the procedure fails to bring about improvement, it’s often because the patient had a very long septal perforator artery and instilling the alcohol caused a large MI, making things worse. Or the patient didn’t have a septal perforator artery, or had one with so many branches that the cardiologist couldn’t identify the right one to treat to target the septum.
Dr. Nishimura reported having no financial conflicts.
Echocardiography can benefit use of stented bovine graft for MVR in infants
Mitral valve replacement in infants and young children is complicated because appropriately sized prostheses are difficult to come by and these patients need replacements later on as they continue to grow – thus the high rates of reintervention and death. Pediatric cardiac surgery specialists at Boston Children’s Hospital are among the few that have used stented jugular vein grafts in these patients, and they have reported on a refinement of their technique that uses echocardiography before and after graft placement to obtain valuable measurements for sizing and implanting a prosthesis and for identifying patients at risk of complications.
Lindsay R. Freud, MD, and her associates reported in the January 2017 issue of the Journal of Thoracic and Cardiovascular Surgery on pre- and postoperative echocardiograms of 24 patients who had mitral valve replacement (MVR) with the Melody stent-mounted, valved bovine jugular vein graft (Medtronic) (J Thorac Cardiovasc Surg. 2017;153:153-60). The device, which is approved for transcatheter pulmonary valve replacement, was adapted for implantation into the mitral position, an indication that is not yet Food and Drug Administration approved. “With the increasing use of the Melody valve in the mitral position in infants and young children, we sought to provide a framework for both pre- and early postoperative echocardiographic assessment,” Dr. Freud and her coauthors said.
“The potential dimensions often had normal z scores with fair correlation with intraoperative Melody dilation,” the investigators said. They also found that a ratio of the narrowest subaortic region in systole to the actual MV dimension (SubA:MV) less than 0.5 was associated with postoperative left ventricular outflow tract obstruction (LVOTO), which occurred in four patients. The median age of the study group was 8.5 months.
“Postoperatively, mitral gradients substantially improved, with low values relative to the effective orifice area of the Melody valve,” Dr. Freud and her associates said. None of the patients had significant regurgitation or perivalvar leak.
In early reports of the Melody valve in infants and small children, the surgeons determined the size of the replacement valve during the operation itself. Despite encouraging early results, reports of complications such as LVOTO soon followed. The Children’s Hospital Boston researchers undertook the study to determine if echocardiography before surgery would help to identify the correct valve size for expansion and predict which patients would be at risk for LVOTO.
“The preoperative SubA:MV ratio may help assess the risk for postoperative LVOTO, which is an important complication,” Dr. Freud and coauthors said. The presence of LVOTO preoperatively was also a risk factor, but only one of eight patients with an atrioventricular canal defect developed LVOTO. In patients with a SubA:MV ratio less than 0.5, preoperative LVOTO, or any other anatomic risk factor, surgeons should consider options to prevent LVOTO, Dr. Freud and her associates said. Those alternatives include more aggressive resection of stent material, atrial displacement of the valve, or less aggressive distal expansion of the valve.
Postoperative echocardiography enabled Dr. Freud and her coauthors to outline baseline values for the Melody valve in the mitral position by maximum intraoperative balloon diameter, ranging from 1 cm to 1.8 cm in 0.2-cm steps, and depending on five measurements at each step: peak and mean gradients, peak velocity, effective orifice area, and indexed effective orifice area.
“Validation of candidacy for Melody MVR and noninvasive assessment among larger series of patient will be necessary as greater experience with the Melody valve evolves,” Dr. Freud and her associates concluded.
Coauthor Sitaram Emani, MD, has filed a patent for an expandable valve through Boston Children’s Hospital. Dr. Freud and her other coauthors had no financial relationships to disclose.
The Melody valve is an “appealing solution” for MVR in infants and small children, Patrick Myers, MD, of Geneva University Hospitals said in his invited commentary (J Thorac Cardiovasc Surg. 2017;153:151-2) “This contribution brings further data to support Melody MVR,” he said of the report by Dr. Freud and her colleagues.
However, Dr. Myers noted that beyond the Boston Children’s Hospital experience, only two other reports of the Melody valve in the mitral position in children exist. “There are several outstanding technical issues that need to be investigated for the use of the Melody valve in the mitral position,” he said. Among those issues is the length of the stent itself – 28 mm, which can lead to LVOTO after placement “in a diminutive ventricle.” The fact that “only” four patients in the study group developed LVOTO after Melody MVR is “reassuring with regard to this theoretic limitation,” Dr. Myers said. “And the echocardiographic ratio of the narrowest subaortic region in systole to the actual mitral valve dimension could be of use in deciding when to be more aggressive in preventing LVOTO,” he said.
Dr. Myers also said that this report answered some questions about the durability of a venous valve under systemic pressures, but added, “Further echocardiographic and clinical follow-up data in this very challenging population are required,” he said.
Dr. Myers had no financial relationships to disclose.
The Melody valve is an “appealing solution” for MVR in infants and small children, Patrick Myers, MD, of Geneva University Hospitals said in his invited commentary (J Thorac Cardiovasc Surg. 2017;153:151-2) “This contribution brings further data to support Melody MVR,” he said of the report by Dr. Freud and her colleagues.
However, Dr. Myers noted that beyond the Boston Children’s Hospital experience, only two other reports of the Melody valve in the mitral position in children exist. “There are several outstanding technical issues that need to be investigated for the use of the Melody valve in the mitral position,” he said. Among those issues is the length of the stent itself – 28 mm, which can lead to LVOTO after placement “in a diminutive ventricle.” The fact that “only” four patients in the study group developed LVOTO after Melody MVR is “reassuring with regard to this theoretic limitation,” Dr. Myers said. “And the echocardiographic ratio of the narrowest subaortic region in systole to the actual mitral valve dimension could be of use in deciding when to be more aggressive in preventing LVOTO,” he said.
Dr. Myers also said that this report answered some questions about the durability of a venous valve under systemic pressures, but added, “Further echocardiographic and clinical follow-up data in this very challenging population are required,” he said.
Dr. Myers had no financial relationships to disclose.
The Melody valve is an “appealing solution” for MVR in infants and small children, Patrick Myers, MD, of Geneva University Hospitals said in his invited commentary (J Thorac Cardiovasc Surg. 2017;153:151-2) “This contribution brings further data to support Melody MVR,” he said of the report by Dr. Freud and her colleagues.
However, Dr. Myers noted that beyond the Boston Children’s Hospital experience, only two other reports of the Melody valve in the mitral position in children exist. “There are several outstanding technical issues that need to be investigated for the use of the Melody valve in the mitral position,” he said. Among those issues is the length of the stent itself – 28 mm, which can lead to LVOTO after placement “in a diminutive ventricle.” The fact that “only” four patients in the study group developed LVOTO after Melody MVR is “reassuring with regard to this theoretic limitation,” Dr. Myers said. “And the echocardiographic ratio of the narrowest subaortic region in systole to the actual mitral valve dimension could be of use in deciding when to be more aggressive in preventing LVOTO,” he said.
Dr. Myers also said that this report answered some questions about the durability of a venous valve under systemic pressures, but added, “Further echocardiographic and clinical follow-up data in this very challenging population are required,” he said.
Dr. Myers had no financial relationships to disclose.
Mitral valve replacement in infants and young children is complicated because appropriately sized prostheses are difficult to come by and these patients need replacements later on as they continue to grow – thus the high rates of reintervention and death. Pediatric cardiac surgery specialists at Boston Children’s Hospital are among the few that have used stented jugular vein grafts in these patients, and they have reported on a refinement of their technique that uses echocardiography before and after graft placement to obtain valuable measurements for sizing and implanting a prosthesis and for identifying patients at risk of complications.
Lindsay R. Freud, MD, and her associates reported in the January 2017 issue of the Journal of Thoracic and Cardiovascular Surgery on pre- and postoperative echocardiograms of 24 patients who had mitral valve replacement (MVR) with the Melody stent-mounted, valved bovine jugular vein graft (Medtronic) (J Thorac Cardiovasc Surg. 2017;153:153-60). The device, which is approved for transcatheter pulmonary valve replacement, was adapted for implantation into the mitral position, an indication that is not yet Food and Drug Administration approved. “With the increasing use of the Melody valve in the mitral position in infants and young children, we sought to provide a framework for both pre- and early postoperative echocardiographic assessment,” Dr. Freud and her coauthors said.
“The potential dimensions often had normal z scores with fair correlation with intraoperative Melody dilation,” the investigators said. They also found that a ratio of the narrowest subaortic region in systole to the actual MV dimension (SubA:MV) less than 0.5 was associated with postoperative left ventricular outflow tract obstruction (LVOTO), which occurred in four patients. The median age of the study group was 8.5 months.
“Postoperatively, mitral gradients substantially improved, with low values relative to the effective orifice area of the Melody valve,” Dr. Freud and her associates said. None of the patients had significant regurgitation or perivalvar leak.
In early reports of the Melody valve in infants and small children, the surgeons determined the size of the replacement valve during the operation itself. Despite encouraging early results, reports of complications such as LVOTO soon followed. The Children’s Hospital Boston researchers undertook the study to determine if echocardiography before surgery would help to identify the correct valve size for expansion and predict which patients would be at risk for LVOTO.
“The preoperative SubA:MV ratio may help assess the risk for postoperative LVOTO, which is an important complication,” Dr. Freud and coauthors said. The presence of LVOTO preoperatively was also a risk factor, but only one of eight patients with an atrioventricular canal defect developed LVOTO. In patients with a SubA:MV ratio less than 0.5, preoperative LVOTO, or any other anatomic risk factor, surgeons should consider options to prevent LVOTO, Dr. Freud and her associates said. Those alternatives include more aggressive resection of stent material, atrial displacement of the valve, or less aggressive distal expansion of the valve.
Postoperative echocardiography enabled Dr. Freud and her coauthors to outline baseline values for the Melody valve in the mitral position by maximum intraoperative balloon diameter, ranging from 1 cm to 1.8 cm in 0.2-cm steps, and depending on five measurements at each step: peak and mean gradients, peak velocity, effective orifice area, and indexed effective orifice area.
“Validation of candidacy for Melody MVR and noninvasive assessment among larger series of patient will be necessary as greater experience with the Melody valve evolves,” Dr. Freud and her associates concluded.
Coauthor Sitaram Emani, MD, has filed a patent for an expandable valve through Boston Children’s Hospital. Dr. Freud and her other coauthors had no financial relationships to disclose.
Mitral valve replacement in infants and young children is complicated because appropriately sized prostheses are difficult to come by and these patients need replacements later on as they continue to grow – thus the high rates of reintervention and death. Pediatric cardiac surgery specialists at Boston Children’s Hospital are among the few that have used stented jugular vein grafts in these patients, and they have reported on a refinement of their technique that uses echocardiography before and after graft placement to obtain valuable measurements for sizing and implanting a prosthesis and for identifying patients at risk of complications.
Lindsay R. Freud, MD, and her associates reported in the January 2017 issue of the Journal of Thoracic and Cardiovascular Surgery on pre- and postoperative echocardiograms of 24 patients who had mitral valve replacement (MVR) with the Melody stent-mounted, valved bovine jugular vein graft (Medtronic) (J Thorac Cardiovasc Surg. 2017;153:153-60). The device, which is approved for transcatheter pulmonary valve replacement, was adapted for implantation into the mitral position, an indication that is not yet Food and Drug Administration approved. “With the increasing use of the Melody valve in the mitral position in infants and young children, we sought to provide a framework for both pre- and early postoperative echocardiographic assessment,” Dr. Freud and her coauthors said.
“The potential dimensions often had normal z scores with fair correlation with intraoperative Melody dilation,” the investigators said. They also found that a ratio of the narrowest subaortic region in systole to the actual MV dimension (SubA:MV) less than 0.5 was associated with postoperative left ventricular outflow tract obstruction (LVOTO), which occurred in four patients. The median age of the study group was 8.5 months.
“Postoperatively, mitral gradients substantially improved, with low values relative to the effective orifice area of the Melody valve,” Dr. Freud and her associates said. None of the patients had significant regurgitation or perivalvar leak.
In early reports of the Melody valve in infants and small children, the surgeons determined the size of the replacement valve during the operation itself. Despite encouraging early results, reports of complications such as LVOTO soon followed. The Children’s Hospital Boston researchers undertook the study to determine if echocardiography before surgery would help to identify the correct valve size for expansion and predict which patients would be at risk for LVOTO.
“The preoperative SubA:MV ratio may help assess the risk for postoperative LVOTO, which is an important complication,” Dr. Freud and coauthors said. The presence of LVOTO preoperatively was also a risk factor, but only one of eight patients with an atrioventricular canal defect developed LVOTO. In patients with a SubA:MV ratio less than 0.5, preoperative LVOTO, or any other anatomic risk factor, surgeons should consider options to prevent LVOTO, Dr. Freud and her associates said. Those alternatives include more aggressive resection of stent material, atrial displacement of the valve, or less aggressive distal expansion of the valve.
Postoperative echocardiography enabled Dr. Freud and her coauthors to outline baseline values for the Melody valve in the mitral position by maximum intraoperative balloon diameter, ranging from 1 cm to 1.8 cm in 0.2-cm steps, and depending on five measurements at each step: peak and mean gradients, peak velocity, effective orifice area, and indexed effective orifice area.
“Validation of candidacy for Melody MVR and noninvasive assessment among larger series of patient will be necessary as greater experience with the Melody valve evolves,” Dr. Freud and her associates concluded.
Coauthor Sitaram Emani, MD, has filed a patent for an expandable valve through Boston Children’s Hospital. Dr. Freud and her other coauthors had no financial relationships to disclose.
FROM JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY
Key clinical point: Preoperative echocardiography may help guide placement of modified stented jugular vein grafts in infants and small children with hypoplastic mitral and aortic valves.
Major finding: Echocardiography showed that a ratio of the narrowest subaortic region in systole to the actual mitral valve dimension of less than 0.5 was associated with postoperative left ventricular outflow tract obstruction.
Data source: Single-center, retrospective review of 24 patients who underwent mitral valve replacement with modified stented jugular vein grafts from March 2010 to March 2015.
Disclosures: Coauthor Sitaram Emani, MD, has filed a patent for an expandable valve through Boston Children’s Hospital. Dr. Freud and her other coauthors had no financial relationships to disclose.