Journal of Otolaryngology and Ophthalmology of Shandong University ›› 2020, Vol. 34 ›› Issue (1): 46-49.doi: 10.6040/j.issn.1673-3770.0.2018.294

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CT changes in upper airway compliance in patients with obstructive sleep apnea-hypopnea ayndromeusing CPAP

L(¨overU)Dan1, SUN Minghong2, YU Xueying3, ZHANG Yanqing3, MEI Xubin2, LIU Wenjun2   

  1. 1. Department of Otolaryngology, Jinan City People's Hospital, Jinan 271199, Shandong, China;
    2. Department of Otolaryngology, Qingdao Municipal Hospital, Qingdao 266000, Shandong, China;
    3. Clinical Medical College of Weifang Medical University, Weifang 261000, Shandong, China
  • Published:2020-03-06

Abstract: Objective To assess changes using computed tomography(CT)in obstructive sleep apnea-hypopnea syndrome(OSAHS)patients upper airways before and after noninvasive positive pressure ventilation was conducted. To investigate the effect of noninvasive positive pressure ventilation on the compliance of the minimum cross-sectional area of each block. Methods The subjects were 95 people(58 males and 37 females)that had been diagnosed withOSAHS. The minimum cross-sectional area of the nasopharyngeal cavity, palatopharyngeal cavity, glossopharyngeal cavity, and throat cavity was measured using CT scanning of the airway. The Muller test, small breaths and closed nasal inhalation, was used both before continuous positive airway pressure(CPAP)treatment and after 6 months. The compliance of the minimum cross-section area of each block was measured and calculated. The minimum cross-section area compliance of each block was compared. Results Before and after CPAP treatment, the minimum cross-sectional areas of the obstruction compliance weredifferent. This includedthe velopharyngeal, pharyngeal, laryngeal compliance.The difference, P<0.01 was statistically significant. Following6 months of CPAP treatment, patients with a nasopharyngeal cavity and pharyngeal cavity or a pharynx cavity and hypopharyngeal cavity hadlower compliance than before treatment. Thet values were 6.743, 69.601, 36.724, 12.242.Thedifference was statistically significant, P<0.01. Conclusion Before and after CPAP treatment, the conformance was different, and both the palatopharyngealand laryngopharyngeal cavity were more compliant. Following6 months of CPAP treatment, the compliance of all obstructive cavities reduced.The compliance of the velopharyngeal and glossopharyngeal areas displayed the most significant changes.

Key words: Sleep apnea, CPAP treatment, Obstruction cavity, Compliance, CT measurement

CLC Number: 

  • R766.43
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