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作者采用新的方法对哮喘患者的食管和气管pH进行了24小时的连续测定，以明确胃酸吸人与哮喘发作的关系。方法在全麻下经硬式气管镜和纤维十二指肠镜放置pH电极。1mm气管电极经14号导管放管于隆突上方2cm处，1．5nun食管电极放置于食管下括约肌上方5cm处，分别采用纤维支气管镜
The authors used a novel approach to determine the esophageal and tracheal pH of asthmatic patients for a 24-hour continuous measure to determine the relationship between gastric acid absorption and asthma attacks. Methods The pH electrodes were placed under hard bronchoscopy and fiber duodenoscopy under general anesthesia. 1mm tracheal electrode by 14 catheter tube placed 2cm above the carina, 1.5nun esophageal electrode placed 5cm above the lower esophageal sphincter, respectively, using fiberoptic bronchoscopy