OSAHS患者清醒和睡眠状态下的咽腔CT测量

目的 研究阻塞性睡眠呼吸暂停低通气综合征（obstructive sleep apnea hypopnea syndrome，OSAHS）患者咽腔狭窄部位及程度。方法 50例OSAHS患者分为2组，1组行清醒状态下单层螺旋CT扫描，2组行睡眠状态下单层和16层螺旋CT扫描，了解软腭水平咽腔的最小径和截面积。对照组为225例健康成人资料。结果 1组患者咽腔平均最小径5．85mm，平均最小截面积50．3mm^2；2组患者单层及16层螺旋CT测量咽腔平均最小径分别为2．88mm和1．62mm，平均最小截面积分别为31．5mm^2和6．3mm^2。结论 OSAHS患者清醒状态下CT咽腔测量可作为评价患者咽腔狭窄程度的手段之一，而睡眠状态下的CT咽腔测量更有助于了解患者的气道塌陷情况，其中16层螺旋CT能够更为准确地反映患者睡眠状态下咽腔的真实情况。

CT measure of pharynx of OSAHS patients

OBJECTIVE To investigate the location and degree of pharyngeal narrowing in patients with ob-structive sleep apnea-hypopnea syndrome(OSAHS). METHODS Fifty patients with OSAHS were divided into two groups. The first group was examined with single layer helix CT at an awaken state. The second group was examined with single and 16 layer helix CT at an asleep state. Control group was 225 healthy adults. RESULTS The average minimum diameter of pharynx at soft palate level was 5.85 mm and the aver-age minimum section proportion was 50.3 mm2 in the first group. The average minimum diameter and the av-erage minimum section proportion of pharynx at soft palate level were 2.88 mm and 31.5 mm2, and 1.62 mm and 6.3 mm2 as examined with single layer and 16 lay-ers helix CT scan respectively in the second group. CONCLUSION CT can be used as a method for esti-mating the degree of pharyngeal narrowing in patients with OSAHS. 16 layer helix CT scan can reflect the actual pharyngeal narrowing in OSAHS patients while sleeping more accurately.