For decades, sleep apnea has been seen as an obstacle to ablation’s success.

Key takeaways:

In patients with both OSA and atrial fibrillation, catheter ablation was associated with a 40% drop in major cardiovascular events and a 70% decline in all-cause mortality.
The procedure was also linked to a decreased risk of blood clots that can cause embolism or stroke.
The findings suggest catheter ablation should be considered part of an integrated management strategy and not dismissed due to comorbid sleep apnea.
The study, published in the Journal of Cardiovascular Electrophysiology, analyzed data from more than 18,000 patients from the global TriNetX network.

A new study from Tulane University suggests that catheter ablation offers significant survival benefits for patients with comorbid obstructive sleep apnea (OSA) and atrial fibrillation (AFib), challenging the long-held belief that OSA hinders the procedure’s success.

The study, published in the Journal of Cardiovascular Electrophysiology, found that catheter ablation was associated with a 70% decline in all-cause mortality and a 40% drop in major cardiovascular events in this high-risk patient population.

For decades, OSA has been viewed as an obstacle for successful catheter ablation, with previous studies indicating that patients with both conditions often have higher AFib recurrence rates and poorer long-term outcomes. This new research suggests the procedure remains a highly effective intervention.

Using data from the global TriNetX network, researchers analyzed outcomes from more than 18,000 patients, half of whom underwent catheter ablation. The analysis also found that the procedure was associated with a decreased risk of blood clots that can lead to embolism or stroke.

“They suggest that even when sleep apnea complicates AFib management, catheter ablation can still lead to better long-term survival and fewer serious cardiac complications,” says lead author Ghassan Bidaoui, MD, current resident at Tulane University, School of Medicine, in a release. “This offers a pathway toward personalized, comprehensive care where procedural interventions are not dismissed solely based on comorbid sleep apnea but rather considered as part of an integrated management strategy.”

The comorbidity of OSA and AFib presents a significant cardiovascular risk. The study’s authors hope these findings encourage earlier and broader consideration of catheter ablation to improve outcomes for this growing patient group.

“By treating AFib with catheter ablation, we saw a dramatic drop in risk; over 70% reduction in mortality and major improvements in stroke, heart failure, and coronary disease outcomes,” says co-author Nassir Marrouche, MD, director of the Tulane University Heart and Vascular Institute, in a release. “These findings could redefine how we manage this high-risk group.”