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《Journal of Otolaryngology and Ophthalmology of Shandong University》 2015-03
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Sources of snoring sound during drug-induced sleep observed with fiberoptic laryngoscope

XU Huijie;JIA Ruifang;YU Hui;GAO Zhan;PENG Hao;YANG Yi;ZHANG Lei;HUANG Weining;Department of Otorhinolaryngology,Beijing Hospital;Department of Anesthesiology,Beijing Hospital;  
Objective To investigate the sources of snoring sound in simple snores and in patients with different degrees of obstructive sleep apnea / hypopnea syndrome( OSAHS). Methods A total of 15 subjects with simple snores and 37 patients with mild to severe OSAHS were involved. Sites of vibration from nasopharynx to laryngeal pharynx while snoring in each patient were observed with fiberoptic laryngoscope during drug-induced sleep. Results Vibration of soft palate,lateral wall,epiglottis and tongue base could be observed during snoring,and the distribution of lateral wall vibration had statistical significance among different groups. 52 snores showed two types of source of snoring in general:palatal fluttering only( type Ⅰ) and multisite vibration( type Ⅱ). The latter could be divided into 3 subtypes further:palatal fluttering with vibration of epiglottis( type Ⅱa),palatal fluttering with vibration of Lateral wall( type Ⅱb),and palatal fluttering with vibration of lateral wall,epiglottis and tongue base together( type Ⅱc). Percentage of type Ⅰdecreased as the severity of OSAHS increased. Type IIb was more common in patients with media and heavy OSAHS,and type IIc were most common in patients with heavy OSAHS. Conclusion Source of snoring is of diversity,snorers with different severity of sleep breath disorder shows different patterns of that. The main source of snoring should be identified when we choose treatment method for snorers.
【Fund】: 国家自然科学基金(61271410)
【CateGory Index】: R766
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