The pH measurement of gastric samples during endoscopic examination

Abstract

The pH value of gastric juice and the endoscopic findings of the stomach were examined in 1,129 patients. The gastric ample was obtained from the gastric fundus with a small tube via a biopsy channel during endoscopic examination. Among 353 patients without any pathological findings at endoscopic examination, 193 patients under age 50 showed a lower pH values than 160 patients over age 50. The pH distribution in 225 patients with gastric ulcer was simlar to that of non pathologic group. On the other hand, the majority of 160 patients with duodenal ulcer showed lower pH values compared with gastric ulcer group. The pH values of the gastric samples were also compared in relation to the stage of ulceration. The gastric samples from patients with active stage of gastric and duodenal ulcer showed lower pH values and tended to show higher with its healing. However, even in the scar stage, the pH values in the duodenal ulcer group were apparently lower than those of the gastric ulcer or non-pathologic group. © 1985, Japan Gastroenterological Endoscopy Society. All rights reserved.