Long-term Oral Esomeprazole for Prevention of Peptic Ulcer Rebleeding in High-risk Patients

Inclusion Criteria: * Eligible participants included patients ≥20 years who had undergone gastroscopy for melena, haematochezia, or haematemesis due to bleeding peptic ulcers with major stigmata of recent hemorrhage. The major stigmata of recent haemorrhage were classified as Forrest class Ia, Ib, IIa, and IIb. All of the stigmata are given one or a combination of endoscopic therapies, including local injection of diluted epinephrine 1:10000, bipolar heated probe, argon plasma coagulation, band ligation, or hemoclip therapy. Patients will undergo a follow-up endoscopy about 12 to 16 weeks later to confirm that the ulcer has healed to be less than 0.5 cm; otherwise, patients are not enrolled. Exclusion Criteria: * Patients are excluded if they had tumor bleeding or ulcer bleeding due to the presence of a Dieulafoy lesion or mechanical factors (e.g, gastrostomy tube induction), comorbid with reflux esophagitis grade C or D, Barrett's esophagus, or marginal ulcer bleeding, hypersensitivity to esomeprazole or any component of the formulation, or had previously participated in the study. Because of concern for patient safety with certain drug-drug interactions, patients who receive anti-platelet therapy, e.g., aspirin, clopidogrel, or others for prophylaxis of established cardiovascular or cerebrovascular diseases will be excluded.