抄録
Mucosal surface pH study was done for 58 cases having upper gastro-intestinal complaints. We got f ollwing results from surface pH study : 1. The mucosal surface pH of the stomach was chiefly affected by gastric mucosal atr-ophy ; 2. the surface pH of the case of endoscopic normal gastric mucosa were 5.5 for distal esophagus, 2.4 for ga-stric corpus, 2.2 for angle 4.9 for antrum and 6.5 for duodenal bulb. Determination of gastric atrophic border was carried out for 2 cases of duodenal ulcer, 1 case of gastric ulcer and 1 case of II a type early gastric cancer. The gastric mucosa showed from pH 0 to pH 3 could be diagnosed as f undic mucosa from bioptic histological basis. On the other hand, the gastric mucosa showed more than pH 6 could be diagnosed as pyloric mucosa. The area showed from pH 3 to pH 6 were diagnostic invalid for the dete-rmination of the gastric atrophic border. So, we recommend intravenous administration of tetra-gastrin in case of endoscopic determination of gastric atrophic border with microglass pH-electrode.
