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KMID : 0361020070500090779
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Korean Journal of Otolaryngology - Head and Neck Surgery
2007 Volume.50 No. 9 p.779 ~ p.783
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Comparison of Polysomnographic Findings according to Obstruction Sites in Obstructive Sleep Apnea Patients
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Moon Sung-Joong
Lee Chul-Hee
Han Doo-Hee
Kong Il-Gyu
Kim Si-Whan
Yoon In-Young
Chung Seock-Hoon
Rhee Chae-Seo
Min Yang-Gi
Kim Dong-Young
Kim Jeong-Whun
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Abstract
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Background and Objectives: The aim of this study is to identify differences in polysomnographic findings according to the upper airway obstruction level in patients with obstructive sleep apnea (OSA).
Subjects and Methods: Eighty-four patients with OSA were included in this study. Every patient underwent polysomnography (PSG) and upper airway pressure measurement using a four-sensor catheter simultaneously. The catheter was positioned at the posterior nasal cavity, uvula tip, tip of the epiglottis, and mid-esophagus level, which was inserted through the nasal cavity down to the esophagus. The patients were categorized into two groups of single site obstruction and multi-site obstruction.
Results:Twenty-one patients showed single site obstruction and sixtythree patients showed multi-site obstruction. Apnea-hypopnea index, apnea index, and minimal oxygen saturation showed statistically significant differences between two groups. There was no difference in bony mass index (BMI).
Conclusions: Upper airway pressure measurement can be a method to evaluate the upper airway obstruction site. This study shows that OSA patients with multisite obstruction have severer sleep apnea than those with single site obstruction
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KEYWORD
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Sleep apnea, Polysomnography, Apnea level, Airway pressure recording
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