Fig. 1From: Effect of postoperative positive airway pressure on risk of postoperative atrial fibrillation after cardiac surgery in patients with obstructive sleep apnea: a retrospective cohort studyCohort-building Diagram. 1Study included only patients who underwent coronary artery bypass grafting and/or valve surgeries. 2Electrocardiography. 3Obstructive sleep apnea. 4Postoperative positive airway pressure. 5Postoperative atrial fibrillationBack to article page