Obstructive Sleep Apnea and Atrial Fibrillation.

Area of Science:

• Cardiology
• Sleep Medicine
• Public Health

Background:

• Atrial fibrillation (AF) is a prevalent arrhythmia, often associated with aging and comorbidities.
• Obstructive sleep apnea (OSA), a common sleep disorder, particularly in older men, is increasingly recognized as a risk factor for cardiovascular diseases.
• The co-occurrence and specific prevalence of OSA in AF patients remain unclear due to underdiagnosis of OSA.

Purpose of the Study:

• To investigate the association between obstructive sleep apnea and atrial fibrillation through a meta-analysis.
• To explore potential cofactors, such as age and hypertension, influencing the AF-OSA link using meta-regression.
• To determine the incidence of AF in patients diagnosed with OSA.

Main Methods:

• A comprehensive meta-analysis was conducted, synthesizing data from 20 scientific studies.
• The analysis included a total of 54,271 patients to assess the prevalence and incidence of AF in individuals with and without OSA.
• Meta-regression was employed to identify factors that modify the relationship between OSA and AF.

Main Results:

• A significant association was identified between obstructive sleep apnea and atrial fibrillation.
• Patients with OSA exhibited an 88% higher incidence of atrial fibrillation compared to those without OSA.
• Older age and the presence of hypertension were found to independently strengthen the association between OSA and AF.

Conclusions:

• The findings strongly link OSA with an increased risk of AF, highlighting the importance of considering OSA in AF management.
• The heightened risk in older individuals and those with hypertension suggests that effective OSA treatment could potentially mitigate AF recurrence.
• Early referral of OSA patients to cardiology is clinically significant, though further research into the underlying mechanisms is warranted.