obstructive sleep apnea (OSA)

obstructive sleep apnea (OSA)

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Obstructive sleep apnea (OSA) is a sleep disorder characterized by repetitive partial and/or complete collapses of the upper airway, associated with arousals/awakenings and/or decreases in oxygen levels in the blood. The episodes last more than 10 seconds, by definition, but can last up to 30-60 seconds. Untreated sleep apnea may cause daytime sleepiness and increased risk of cardiovascular events, such as high blood pressure, heart attack, and stroke.

Synonyms:
sleep apnea
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