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目的 观察术后持续胃肠减压是否与口服雷尼替丁一样能消除胃内因素对胃粘膜 pH( pHi)测定准确性的影响。方法 14例无胃肠疾病的住院手术患者 ,在术前首次测胃pHi前 12h、前 2h口服雷尼替丁各 15 0mg ;术后持续经液体分压计 (TRIP)鼻胃管胃肠减压 ,相隔 2 4h再次测胃 pHi。 结果 首次 pHi为7 35± 0 0 3,再次pHi为 7 36± 0 0 5 (P >0 2 0 )。结论 术后持续胃肠减压可消除胃内因素对胃pHi测定准确性的影响
Objective To observe whether continuous postoperative gastrointestinal decompression can eliminate the influence of gastric factors on the determination of gastric mucosal pH (pHi) as oral ranitidine. Methods Fourteen patients undergoing in-hospital surgery without gastrointestinal disease were given ranitidine 15Omg before 12h before the first measurement of gastric pHi before operation, Pressure, measured 2-4h intervals again gastric pHi. Results The first pHi was 7 35 ± 0 0 3 and the second was pH 7 36 ± 0 0 5 (P> 0 20). Conclusions Continuous postoperative gastrointestinal decompression can eliminate the influence of intragastric factors on the accuracy of gastric pHi measurement