消化道疾病患者中约20～50%有胃-食管反流情况发生,食管内pH测定法诊断胃-食管反流的优点是,破坏性小,准确,操作简单,费用低。作者检查了210例患者,用双管pH 探头,开始时探头放入深度35cm,测定食管pH 值,再把探头放入深度达45cm,向胃内注入0.1mol/L 盐酸500ml,然后探头退回到食管,用10～15ml 水冲洗,测定1小时内食管pH 值变化,如没有酸度过高,令病人练习腹壁加 Gastro-esophageal reflux occurs in about 20% to 50% of patients with gastrointestinal diseases. The advantage of esophageal pH measurement in diagnosing gastric-esophageal reflux is that it is less disruptive, accurate, simple to operate and less expensive. The authors examined 210 patients, double pH probe tube, the probe into the depth of 35cm at the beginning, esophageal pH measurement, then the probe into the depth of 45cm, injection 0.1mol / L 500ml stomach hydrochloric acid, and then back to the probe Esophagus, rinse with 10 ~ 15ml water, measured within 1 hour esophageal pH changes, such as no acidity is too high, so that patients practice abdominal wall plus