• Tatsuo Ozawa, Nozomi Yoshikawa, Takashige Tomita, Yasushi Akita, and Keiji Mitamura.
• Second Department of Internal Medicine, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8666, Japan.
• J. Gastroenterol. 2003 Jan 1; 38 (9): 844-8.

BackgroundThis study investigated the influence of feeding on gastric acid suppression in Helicobacter pylori-positive patients treated with intravenous infusions of proton pump inhibitors (PPIs) or with H2-receptor antagonists (H2-RAs) after bleeding from a gastric ulcer.MethodsForty-nine H. pylori-positive patients with bleeding gastric ulcers (44 men and 5 women) were divided into four groups: one group received an H2-RA while fasting, one group received an H2-RA while eating regularly, one group received a PPI while fasting, and one group received a PPI while eating regularly. Intragastric pH was monitored during fasting and nonfasting to calculate the pH 3 and pH 4 holding times and the mean pH.ResultsDuring a 24-h fast, the pH 3 and pH 4 holding times and the mean pH were significantly higher in patients administered omeprazole (PPI; 93.2 +/- 9.2%, 90.6 +/- 11.1%, and 6.9 +/- 0.6, respectively) than in those administered ranitidine (H2-RA; 61.0 +/- 27.5%, 55.8 +/- 29.1%, and 4.8 +/- 1.3, respectively; P<0.001 for all). Results were similar during feeding (PPI meal, 98.9 +/- 2.6%, 98.3 +/- 3.7%, and 6.9 +/- 0.3; H2-RA meal, 59.8 +/- 17.6%, 49.7 +/- 18.0%, and 4.3 +/- 0.7, respectively; P<0.001 for all). In addition, the pH 3 and pH 4 holding times and the mean pH in the H2-RA meal group were not significantly lower than those in the H2-RA group (P=0.999, P=0.865, and P=0.687, respectively). The values in the PPI and PPI meal groups were similar (P=0.872, P=0.777, and P>0.999, respectively).ConclusionsGastric acid suppression during the administration of an H2-RA or a PPI soon after the cessation of gastric bleeding was scarcely affected by feeding. It may well be that H. pylori-positive patients with bleeding gastric ulcer can resume a regular diet and return to work soon after bleeding ceases.

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