The Association Between Nocturnal Cardiac Arrhythmias and Sleep Disordered Breathing: The DREAM Study

697 veterans with suspected sleep disordered breathing were observed for nocturnal arrhythmias during polysomnography. After controlling for age, sex, BMI, and cardiovascular disease, moderate to severe sleep disordered breathing was associated with a two-fold increased risk of nocturnal arrhythmias. Frequency of hypoxic events was positively associated with arrhythmia risk.

http://www.ncbi.nlm.nih.gov/pubmed/26951420