Part 2 · The Lungs and Breathing
Same concept, other depth: Clinical Reasoning →
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When awake, throat muscles hold the airway open. During sleep, a crowded or floppy airway may collapse behind the soft palate and tongue. Each obstruction causes apnoea or hypopnoea, oxygen dips and arousal. Repetition through the night produces sympathetic surges and unrefreshing sleep.
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