24小时食管pH监测电极的三种定位方法比较及其影响因素  

Differences of three positioning methods of the 24-hour esophageal pH catheter and relative factors

作　　者：夏志伟[1] 邸岩[1] 葛颖[1] 王爱英[1] 刘欣[1] 张耀鹏[1] 王琨[1] 段丽萍[1] 

机构地区：[1]北京大学第三医院消化科,100191

出　　处：《中国医师进修杂志》2010年第34期15-17,共3页Chinese Journal of Postgraduates of Medicine

摘　　要：目的探讨食管测压法（M）、pH梯度定位法（P）及x线透视定位法（x）定位24h食管DH监测电极的差别及其影响因素。方法50例患者经M测定下食管括约肌距鼻外缘的长度，记录P定位的pH电极位置距鼻外缘的长度，在X线透视下观察电极位置与胃底贲门交界的距离。以差值绝对值≤2cm为符合标准，分析三种定位方法的差异，并分析影响差别的相关因素。结果经M、P、X定位的电极定位点距鼻外缘的长度分别为（37．9±2．9）、（40．8±4．4）和（40．7±5．3）cm，P与M以及X与M比较差异均有统计学意义（P〈0．01）。P与M符合率62．0％（31／50）；P与x符合率84．0％（42／50）；X与M符合率58．0％（29／50）。P较M偏向胃侧（2．9±3．9）cm。影响P与M差别的主要因素为年龄、身高和下食管括约肌的长度（P〈0．01或〈0．05）。影响x和M的因素为身高和下食管括约肌长度（P〈0．05或〈0．01）。结论与M比较，P确定的位置倾向于偏向胃侧，在身材较高、下食管括约肌长度较长的受试者中易出现差异。X的变异不易确定，亦受身高的影响。Objective To study the differences of esophageal manometry （M）,pH set-up method （P） and X-ray （X） on positioning of the 24-hour esophageal pH catheter and relative factors. Methods Fifty subjects underwent M, then pH catheter was located by P and X. The difference between methods and the relative factors such as body height,lower esophageal sphincter （LES） length ete were analyzed. The difference of less than 2 cm between two methods was accepted. Results The length between the location determined by M,P and X and nose were （37.9 ± 2.9）, （40.8 ±4.4） and （40.7 ± 5.3） cm, respectively. There was significant difference between P and M as well as between X and M （P 〈 0.01 ）. The coincidence rate was 62.0%（31/50） between P and M;84.0%（42/50） between P and X;and 58.0%（29/50） between X and M. Compared with P,M was （2.9 ±3.9） cm nearer to the stomach. Age, body height and LES length were main factors which affect the difference between P and M （P 〈 0.01 or 〈 0.05） ,body height and LES length were main factors which affect the difference between X and M （P 〈 0.05 or 〈 0.01 ）. Conclusions Compared with M, the location determined by P is nearer to stomach. The location of X is varied. Body height and LES length are main relative factors.

关 键 词：食管 氢离子浓度 电极 

分 类 号：R816[医药卫生—放射医学] R57[医药卫生—临床医学]