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Sleep apnea does not predict atrial flutter recurrence after atrial flutter ablation.

Erik M van Oosten¹, Muhammed Ali Furqan, Damian P Redfearn

¹Cardiology Division, Kingston General Hospital, Queen's University, 76 Stuart St., Kingston, Ontario, Canada, K7L 2V7.

Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing

|December 17, 2011

Summary

Sleep apnea (SA) was present in 27% of patients undergoing atrial flutter (AFL) ablation. However, SA did not predict AFL recurrence after ablation, suggesting other factors are more critical for successful outcomes.

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Area of Science:

Cardiology
Sleep Medicine
Electrophysiology

Background:

Atrial flutter (AFL) ablation is a common procedure for managing this arrhythmia.
Sleep apnea (SA) is linked to atrial fibrillation (AF) recurrence post-ablation.
The role of SA in AFL recurrence after ablation is not well-established.

Purpose of the Study:

To investigate the prevalence of sleep apnea (SA) in patients with typical atrial flutter (AFL).
To determine if SA predicts recurrence of AFL or other atrial arrhythmias after AFL ablation.

Main Methods:

Retrospective analysis of 122 patients undergoing right-sided isthmus-dependent AFL ablation.
Assessment of recurrent atrial arrhythmias including AFL, AF, and others.
Determination of SA prevalence and its association with recurrence.

Main Results:

The prevalence of SA in the study population was 27%.
SA was not a significant predictor of AFL recurrence (6.1% vs. 11.2%, p=0.39).
SA also did not predict AF or other atrial arrhythmia recurrences. Lower BMI and no pre-ablation antiarrhythmic drugs were associated with AFL recurrence.

Conclusions:

Sleep apnea is prevalent in patients with typical atrial flutter.
Sleep apnea is not a predictor of AFL recurrence following successful AFL ablation.