Esophageal Acid Contact Time and Heartburn in Acute Treatment with Ranitidine and Metoclopramide

Orr, William C.; Finn, Andrew; Wilson, Timothy; Russell, James
June 1990
American Journal of Gastroenterology;Jun1990, Vol. 85 Issue 6, p697
Academic Journal
Ranitidine and metoclopramide were compared for their ability to reduce esophageal acid contact time and heartburn. Twelve patients with histories of heartburn received ranitidine 150 mg hid, metoclopramide 10 mg qid, and placebo (ranitidine-matched) hid in a randomized, open-label, crossover fashion. Esophageal pH was monitored with an antimony electrode and portable recording unit for 24 h under strictly controlled laboratory conditions. Ranitidine significantly (p ≤ 0.05) reduced 24-h acid contact time from 11.6% to 6.4%. Reflux episode frequency was also significantly (p ≤ 0.05) reduced from 82 to 45 episodes per day and from 12 to 2 episodes at night. In contrast, metoclopramide did not reduce 24-h acid contact time or daytime reflux episode frequency, although nighttime episode frequency was significantly (p ≤ 0.05) decreased. Only ranitidine significantly reduced heartburn frequency and severity. We conclude that acute treatment with ranitidine, hut not metoclopramide, significantly reduces esophageal acid contact time, reflux episode frequency, and heartburn frequency and severity in patients with gastroesophageal reflux.


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