Several studies have examined the impact of CPAP intervention on arrhythmia-free survival following catheter ablation of AF.283,289,290,291,316,317,318,319 Although OSA has been associated with poorer outcomes, CPAP appears to attenuate the deleterious impact of OSA. Pooled analysis suggests that although OSA increases the risk of AF recurrence following ablation (RR 1.31; 95% CI 1.16–1.48; P <.001), CPAP therapy improves ablation success to rates comparable with non-OSA populations (RR 1.25; 95% CI 0.77–2.03; P = .37).320 Nonuse of CPAP increases the risk of recurrent AF after ablation by 57% (RR 1.57; 95% CI 1.36–1.81; P <.001).320 One study demonstrated an increased prevalence of non-PV triggers in patients with OSA.290