A new study examines the link between sleep apnea and “cardiac arrhythmias” – abnormal heart rhythms.The study involved 2,911 older men. Sleep apnea was measured during an overnight sleep study. Heart monitoring detected two groups of abnormal heart rhythms: atrial fibrillation or flutter (AF), and complex ventricular ectopy (CVE).Results show that the general risk of AF and CVE increased as the