Obstructive sleep apnea (OSA) is characterized by a narrowing and collapse of the upper airway during sleep. The prevalence of OSA is reported to be 15% in males and 5% in females. The major symptoms include snoring, unrefreshing sleep, excessive daytime sleepiness (EDS), lack of concentration, impaired memory, and lower quality of life. Aging, the male sex, and obesity are the main risk factors for OSA. Untreated OSA is associated with motor vehicle accidents, cardiovascular disease, stroke, hypertension, diabetes, cognitive dysfunction, and all-cause mortality.
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