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Connective Tissue Diseases 

Connective Tissue Diseases
Chapter:
Connective Tissue Diseases
Author(s):

Floranne C. Ernste

DOI:
10.1093/med/9780190464868.003.0077
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date: 19 October 2019

Obstructive sleep apnea is defined as periodic cessation of airflow (duration ≥10 seconds) during sleep with complete obstruction of the upper airway and continued respiratory effort. Typically, the episode is terminated by a temporary arousal from sleep and return of normal upper airway patency. Hypopnea is defined as partial obstruction of the upper airway during sleep (duration ≥10 seconds), usually with a resultant desaturation of at least 4%. Hypopnea is also typically terminated by a temporary arousal. Such periodic episodes of apnea and hypopnea usually result in fragmented sleep and periodic desaturations.

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