title: Effect of intravenous infusion of omeprazole and ranitidine on twenty-four-hour intragastric pH in patients with a history of duodenal ulcer.
abstract: The effect on intragastric pH of two different dose regimens of continuous intravenous infusion of omeprazole (4 or 8 mg/h after a bolus of 80 mg), and ranitidine (0.25 mg/kg/h after a bolus of 50 mg) was studied in 10 patients with duodenal ulcer disease in symptomatic remission. The pH was monitored over 24-hour periods during fasting in a cross-over, randomised design including a baseline period. With the high omeprazole dose it was possible to maintain a pH > or = 4 in all patients but 1 and 6 of the patients also maintained a pH > or = 6. The lower dose of omeprazole seemed to be somewhat less effective. Continuous infusion of ranitidine was as efficient as the higher omeprazole infusion although with a tendency to decreased pH levels towards the end of the 24-hour period. Thus, in order to obtain consistently high pH levels of 4-6 over a prolonged period a continuous infusion of omeprazole, an 80-mg bolus plus a continuous infusion of 8 mg/h seem to be needed.
authors.affiliation: Medical Department B, Central Hospital, Hilleröd, Denmark.
authors.forename: S
authors.initials: S
authors.lastname: Kiilerich
authors.forename: T
authors.initials: T
authors.lastname: Rannem
authors.forename: L
authors.initials: L
authors.lastname: Elsborg
mesh_terms: D002940:Circadian Rhythm / Q000187:drug effects; D018592:Cross-Over Studies; D004305:Dose-Response Relationship, Drug; D004381:Duodenal Ulcer / Q000150:complications / Q000188:drug therapy / Q000503:physiopathology*; D005744:Gastric Acid / Q000378:metabolism*; D005745:Gastric Acidity Determination; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007262:Infusions, Intravenous; D008297:Male; D008875:Middle Aged; D009853:Omeprazole / Q000008:administration & dosage* / Q000494:pharmacology; D010438:Peptic Ulcer Hemorrhage / Q000188:drug therapy / Q000517:prevention & control; D011899:Ranitidine / Q000008:administration & dosage* / Q000494:pharmacology
chemical_list: D011899:Ranitidine; D009853:Omeprazole