NCT07358429

CPAP Therapy and Atrial Fibrillation Recurrence in OSA

Effects of CPAP Therapy on Atrial Fibrillation Recurrence in Patients With Obstructive Sleep Apnea: A Prospective Cohort Study

• Status: Active Not Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 91 (actual)
• Sponsor: Medical University of Sofia · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

Obstructive sleep apnea (OSA) is a major modifiable risk factor for atrial fibrillation (AF). Continuous positive airway pressure (CPAP) therapy has been shown to improve cardiovascular outcomes; however, real-world data on its effect on AF recurrence remain limited. This prospective cohort study aims to evaluate the association between objective CPAP adherence and the risk of AF recurrence in patients with moderate-to-severe OSA and a history of paroxysmal AF. Patients will be followed for 12 months, with AF recurrence assessed using electrocardiography and Holter monitoring.

Detailed description

This is a prospective, real-world cohort study enrolling adult patients with moderate-to-severe obstructive sleep apnea (AHI ≥ 15 events/hour) and documented paroxysmal atrial fibrillation. OSA is diagnosed using home sleep apnea testing. All participants initiate CPAP therapy, with objective adherence data collected via telemonitoring. Patients are followed for 12 months to assess AF recurrence, progression to permanent AF, and associations with CPAP usage metrics.

Conditions

• Obstructive Sleep Apnea (OSA)
• Atrial Fibrillation (Paroxysmal)

Interventions

Type	Name	Description
DEVICE	Continuous Positive Airway Pressure (CPAP)	CPAP therapy is initiated according to standard clinical practice. Objective adherence data (mean nightly usage, percentage of nights ≥ 4 hours) are collected via telemonitoring systems.

Timeline

• Start date: 2024-09-01
• Primary completion: 2025-11-30
• Completion: 2027-12-30
• First posted: 2026-01-22
• Last updated: 2026-01-22

Locations

1 site across 1 country: Bulgaria