Review of the Relationship Between Obstructive Sleep Apnea and Atrial Fibrillation

Area of Science:

• Cardiology
• Sleep Medicine
• Medical Research

Background:

• Obstructive sleep apnea (OSA) is a prevalent condition associated with cardiac arrhythmias, particularly atrial fibrillation (AF).
• OSA triggers acute autonomic nervous system fluctuations and chronic atrial remodeling.
• These OSA-induced changes create a substrate conducive to AF development and persistence.

Purpose of the Study:

• To explore the intricate relationship between obstructive sleep apnea and atrial fibrillation.
• To elucidate the mechanisms by which OSA contributes to AF.
• To assess the impact of OSA on AF treatment efficacy.

Main Methods:

• Review of existing literature on OSA and AF pathophysiology.
• Analysis of clinical data linking OSA severity to AF prevalence and outcomes.
• Examination of the effects of OSA treatment on cardiac electrophysiology.

Main Results:

• Recurrent apnea and associated physiological changes promote AF through autonomic imbalance and atrial remodeling.
• Chronic intermittent hypoxia, inflammation, and mechanical stress lead to atrial fibrosis and electrical heterogeneity.
• Untreated OSA is associated with reduced efficacy of antiarrhythmic drugs and catheter ablation for AF.

Conclusions:

• OSA significantly influences atrial remodeling, establishing a substrate for AF.
• Continuous positive airway pressure (CPAP) may improve outcomes after AF ablation.
• Improved screening, earlier diagnosis, and timely treatment of OSA are vital for managing AF.