title: Can optimal acid suppression prevent rebleeding in peptic ulcer patients with a non-bleeding visible vessel: a preliminary report of a randomized comparative study.
abstract: OBJECTIVE
  The hypothesis that profound acid suppression might prevent clot lysis and thus benefit patients with a non-bleeding visible vessel has not been confirmed. Omeprazole can suppress gastric acid remarkably and may be beneficial for patients with peptic ulcer bleeding.
  
  
  METHODS
  Fifty-two patients with a non-bleeding visible vessel at the ulcer base were enrolled and randomized into four groups (N = 13 in each group). In the cimetidine group, the patients received cimetidine 300 mg i.v. bolus followed by 300 mg i.v. every 6 hr during hospitalization. In the heater probe thermocoagulation + cimetidine group, the patients received heater probe thermocoagulation and cimetidine 300 mg i.v. bolus followed by 300 mg i.v. every 6 h during hospitalization. In the omeprazole q.d. group, the patients received omeprazole 40 mg i.v. bolus followed by 40 mg i.v. daily for two days. In the omeprazole q 12 h group, the patients received omeprazole 40 mg i.v. bolus followed by 40 mg i.v. every 12 h for two days. A 24 hr intragastric pH was recorded for every case.
  
  
  RESULTS
  The mean 24 hr intragastric pH were higher in the omeprazole q.d. (mean 5.8) and the omeprazole q 12 h groups (mean 6.4) than in the cimetidine (mean 4.3) and the heater probe thermocoagulation + cimetidine groups (mean 4.9) (p < 0.05). Rebleeding occurred in 5, 2, 2 and 2 patients in the cimetidine, heater probe thermocoagulation + cimetidine, omeprazole q.d., and omeprazole q 12 h groups, respectively (p > 0.05). Volume of blood transfusion and number of days in hospital were not statistically different among the four groups.
  
  
  CONCLUSIONS
  Omeprazole can remarkably suppress gastric acid when it is compared to that of the H2 receptor blocker. Patients with a non-bleeding visible vessel using omeprazole do not exhibit a decrease in the rebleeding rate as compared with those patients using cimetidine.
authors.affiliation: Department of Medicine, Veterans General Hospital-Taipei, Taiwan.
authors.forename: H J
authors.initials: HJ
authors.lastname: Lin
authors.forename: W C
authors.initials: WC
authors.lastname: Lo
authors.forename: C L
authors.initials: CL
authors.lastname: Perng
authors.forename: K
authors.initials: K
authors.lastname: Wang
authors.forename: F Y
authors.initials: FY
authors.lastname: Lee
mesh_terms: D000897:Anti-Ulcer Agents / Q000627:therapeutic use*; D002927:Cimetidine / Q000627:therapeutic use*; D003131:Combined Modality Therapy; D004334:Drug Administration Schedule; D004381:Duodenal Ulcer / Q000150:complications*; D004564:Electrocoagulation; D005260:Female; D005745:Gastric Acidity Determination; D006635:Histamine H2 Antagonists / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009853:Omeprazole / Q000627:therapeutic use*; D010438:Peptic Ulcer Hemorrhage / Q000517:prevention & control*; D012008:Recurrence; D013274:Stomach Neoplasms / Q000150:complications*
chemical_list: D000897:Anti-Ulcer Agents; D006635:Histamine H2 Antagonists; D002927:Cimetidine; D009853:Omeprazole