Yeung C, et al. - Given that atrial fibrillation (AF) is a risk factor for ischemic stroke and reported to be associated with severe obstructive sleep apnea (OSA), researchers conducted this prospective observational study in 31 study participants (mean age, 57±10 years; mean body mass index, 35±6 kg/m²; 52% were male) with severe OSA (Apnea-Hypopnea Index ≥30) and no history of AF to determine the occurrence of newly detected AF (lasting ≥10 s). Patients were implanted with a Medtronic Reveal XT implantable loop recorder if no AF was detected. Patients were followed up every 6 months for a total of 3 years. Five (20%) patients had AF. Overall, the identification of newly detected AF may be facilitated with extended cardiac monitoring of patients with severe OSA.