Abstract
Prospective cohort study. Including patients with the diagnosis of UGIB, older than 18 years old, with an endoscopic diagnostic showing the peptic ulcer as the cause of the bleeding and with studies for H. Pylori and other microorganisms. We excluded patients who took NSAIDS in the last 4 weeks. To determinate H. Pylori infection, 2 biopsies of antrum and 2 of gastric body were taken for histologic study, and 1 biopsy of antrum and one of gastric body were taken to do a rapid urease test. H. Pylori was determined with the presence of it in any of the two tests, and was negative when it was not found in neither of two tests. We followed up patients within 30 days after their hospital admission. CONCLUSION
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