Zhonghua er bi yan hou tou jing wai ke za zhi = Chinese journal of otorhinolaryngology head and neck surgery
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Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi · Jun 2006
[Sites of obstruction in obstructive sleep apnea patients and their influencing factors: an overnight study].
To understand how sleep stage and position influence the mechanisms for pharyngeal collapse in different levels of upper airway (UA), overnight state-related changes and postural variation in obstructive sites in obstructive sleep apnea hypopnea syndrome (OSAHS) patients were studied. ⋯ Upper airway obstruction involves more than one specific site of the upper airway and the oropharynx is the most common collapse site. Obstructive sites are likely to extend to lower levels during REM sleep. Sleep position has little effect on the distribution of obstructive site.