title: [Effect of various therapeutic schedules of antacids on the pH of gastric contents in patients with duodenal ulcer].
abstract: Ten patients with uncomplicated duodenal ulcer were given three different therapeutic regimens of antacid experiments II, III and IV, and a control regimen, without antacid, named experiment I. Experiment I consisted of a normal diet with three meals a day; experiment II, III and IV consisted of a diet as in experiment I plus 132,06 mEq, 265,92 mEq or 396,88 mEq respectively of antacid divided in six equal doses given one and three hours after breakfast, lunch and dinner. Having been carefully instructed, the patients were intubated with a gastric tube, which was kept in for five days, receiving in each day one of the aforementioned regimens, in a sequential order. The fifth day was reserved for the augmented Histalog test. Each hour from 8 a.m. to 10 p.m., in the first four days, a sample of the gastric juice was aspirated for pH measurement. The statistical evaluation of the acidity of the samples at different times showed that experiment III (265,92 mEq antacid/day) was able to keep the pH over 3 for longer periods of time when compared with experiments I and II and not different from experiment IV. The present investigation emphasize the necessity of clinical trials comparing therapeutic regimens of antacid with different neutralizing capacity, in order to find the most effective dose in the treatment of duodenal ulcer.
mesh_terms: D000328:Adult; D000863:Antacids / Q000008:administration & dosage*; D004032:Diet; D004334:Drug Administration Schedule; D004381:Duodenal Ulcer / Q000188:drug therapy*; D005744:Gastric Acid / Q000378:metabolism; D005745:Gastric Acidity Determination; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D000863:Antacids
vernacular_title: Efeitos de diferentes esquemas terapêuticos de antiácidos sobre o pH do conteúdo gástrico em pacientes com úlcera duodenal.