Obstructive sleep apnea and atherosclerosis—update 2019

Obstructive sleep apnea (OSA) is a common disorder that has been associated with an increased risk of atherosclerosis and its clinical manifestations. While treatment with continuous positive airway pressure (CPAP) has been shown to exert several beneficial effects on cardiovascular disease and prognosis in observational studies, CPAP was not effective in three recent randomized controlled trials unless it was used for more than 4 hours of sleep.