9. Snoring occurs when air flows past relaxed tissues as patient breathe. The sagging tissues narrow the airway, causing these tissues to vibrate.
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15. Continuous positive airway pressure (CPAP) machine to eliminate snoring and prevent sleep apnea. A CPAP machine delivers just enough air pressure to keep the upper airway passages open.
16. Heavy snorers have their air flow impeded by the structures at the back of the mouth and nose (A and B), which can be alleviated by surgery. In UPPP, the patient's uvula, soft palate, and tonsils are removed (C and D).