Cardiac Arrhythmias and Sleep Disorders

Area of Science:

• Cardiology
• Sleep Medicine
• Internal Medicine

Background:

• Sleep disordered breathing (SDB), periodic limb movements, insomnia, and sleep curtailment are linked to cardiac arrhythmias.
• The association is most consistent and significant between SDB and atrial fibrillation (AF).

Purpose of the Study:

• To review the association between sleep disorders and cardiac arrhythmias.
• To explore the underlying mechanisms and therapeutic implications.

Main Methods:

• Review of community-based and clinical cohort studies.
• Analysis of findings from animal experimental models.
• Evaluation of nonrandomized interventional studies.

Main Results:

• Strongest evidence links SDB and AF.
• Mechanisms include autonomic nervous system fluctuations, intrathoracic pressure changes, and intermittent hypoxia.
• SDB treatment may decrease AF recurrence post-ablation or cardioversion.

Conclusions:

• SDB is a significant risk factor for cardiac arrhythmias, particularly AF.
• Understanding the mechanisms can guide therapeutic strategies.
• Intervention for SDB shows promise in managing AF.