Doctors should assess the risk factors for and the symptoms of obstructive sleep apnea (OSA) in patients with unexplained daytime sleepiness, according to a new evidence-based clinical practice guideline from the American College of Physicians (ACP) published in Annals of Internal Medicine, ACP’s flagship journal.

ACP recommends a full-night, attended, in-laboratory polysomnography (PSG) for diagnostic testing in patients suspected of having OSA. When PSG is not available, ACP recommends using a home-based portable monitor.

ACP’s guideline, “Diagnosis of Obstructive Sleep Apnea in Adults,” includes High Value Care advice to help doctors and patients understand the benefits, harms, and costs of tests and treatment options so they can pursue care together that improves health, avoids harms, and eliminates wasteful practices.