Assertion: sleep apnea's airway | /r/HasSubevent | oxygen desaturation
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Source sentences:
text: Obstructive sleep apnea (OSA) is diagnosed when there is repetitive collapse or obstruction of the airway resulting in oxygen desaturation (hypoxemia) and/or disturbance of sleep (arousals [15 seconds]) resulting in sleep fragmentation and non-restorative sleep.