Introduction
OSA, sleep-related breathing disorder
SLEEP-RELATED BREATHING DISORDERS, OBSTRUCTIVE SLEEP APNEA
Obstructive sleep apnea (OSA) is a common sleep-related breathing disorder, associated with increased morbidity and mortality in the general and surgical population [The screening and treatment of OSA is found to be cost effective on the lifetime horizon [Positional therapy could be a useful intervention in surgical patients with OSA in the perioperative period [The American Society of Anesthesiology practice guidelines on the perioperative management of OSA recognized that positional therapy may improve the AHI in patients with OSA, but acknowledged that the literature was “insufficient to evaluate the effects of positioning adult OSA patients in the postoperative setting” [