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Sleep Apnea: Respiratory Issues 

Sleep Apnea: Respiratory Issues
Sleep Apnea: Respiratory Issues
Acute and Emergent Events in Sleep Disorders

Greg Matwiyoff

, Sheila Tsai

, and Teofilo Lee-Chiong


Chapter 1 discusses sleep apnea—the repetitive cessation or reduction of airflow that occurs during sleep, either as obstructive sleep apnea, or central sleep apnea. It also defines apnea in an adult by a cessation of nasal and oral airflow for at least 10 seconds, which is classified as central if respiratory efforts are absent; as an obstructive event if respiratory efforts are present; or as a mixed event if there is an initial central apneic component followed by an obstructive component. It also discusses hypopnea.

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