In obstructive sleep apnea (OSA) the sleeper's airway becomes narrowed or blocked. This causes very shallow breathing or repeated pauses in breathing. These sleep apnea episodes can occur 300 or more times over the course of a night.

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In OSA, the sleeper's airway becomes narrowed or blocked, causing shallow breathing or repeated pauses in breathing. These episodes can occur 300 or more times in a night.

In Obstructive Sleep Apnea (OSA) the Sleeper's Airway Becomes Narrowed