阻塞性睡眠呼吸暂停综合征发生阻塞部位上呼吸道的CT测量

了解CT测量对阻塞性睡眠呼吸道暂停综合征（obstructive sleep apnea syndrome,OSAS）患者上呼吸道狭窄的定位诊断意义。已知上呼吸道阻塞部位的OSAS患者共35例，将其阻塞部位CT测量资料与年龄性别相近的35名正常对照组比较，结果显示，患者组的各平面气道横截面积，气道前后径，左右径均明显小于对照组，咽喉壁和咽侧壁软组织厚度多大于对照组，发生睡眠期呼吸道阻塞的部位中有72．13％在患者清醒时其气道横截面积低于正常值，研究表明，阻塞部位的CT测量结果与正常对照组比较差异显著，72．13％的病例可以在常规的CT扫描测量中发现呼吸道解剖性狭窄。

THE UPPER AIRWAY CT SCAN OF OBSTRUCTIVE SLEEP APNEA PATIENTS

Compared with CT scan results of OSAS patients and normal adults to explore the value of CT diagnosis of upper airway stricture in patients with OSAS, 35 patients with OSAS and 35 normal adults were included in the study. 22, 19, 12, 8 cases had obstruction at palate, uvula, lingua and epiglottis region respectively, the awaked CT scan results of 61 obstructive sites were compared with those of normal adults. Obvious difference was found between patients and normal adults in area, left right dimension and coronal dimension. difference was also found in thickness of lateral pharyngeal tissue of palate, uvula and lingua region and retropharyngeal tissue of palate and uvula. The normal extent was determined by unilateral 95% confidence interval in normal adult group. And 43 sites had abnormal CT scan results, the positive ratio was 72 13%. The results sugget that there are obvious differences between the patients with OSAS and normal adults, the CT scan measure can show the upper airway obstructive site of patients with OSAS.