A prospective randomized comparative trial showing that omeprazole prevents rebleeding in patients with bleeding peptic ulcer after successful endoscopic therapy.

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Abstract
PATIENTS WITH major bleeding and endoscopic evidence of an ulcer with active bleeding or a nonbleeding visible vessel (NBVV) are at high risk for persistent or recurrent bleeding and should receive endoscopic therapy.1 In the various endoscopic treatments for peptic ulcer hemorrhage, heater probe thermocoagulation (HPT) and multipolar electrocoagulation (MPEC) are the 2 most promising techniques.1