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Your journey
1What's a trial
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More info
You can access this
clinical trial
if you have
Bacterial Infection Due to Helicobacter Pylori (H. Pylori) or Peptic Ulcer Bleeding
and you are
over 18
years old
This is an observational trial.
You are contributing to medical knowledge about your condition.
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The purpose

Low-dose aspirin (ASA) has emerged as the most important cause of peptic ulcer bleeding worldwide. In western countries, ASA has overtaken non steroidal antiinflammatory drugs (NSAIDs) as a major cause of peptic ulcer bleeding in the elderly population [1,2]. Management of peptic ulcer bleeding in patients receiving ASA for cardiothrombotic diseases is a clinical dilemma. In a randomized trial of continuous versus interrupted ASA therapy after endoscopic treatment of peptic ulcer bleeding, patients who discontinued ASA had a 10-fold increased incidence of all-cause mortality compared to those who received continuous ASA therapy. On the other hand, patients receiving continuous ASA therapy had a two-fold increased risk of early rebleeding [3]. Thus, preventing the occurrence of peptic ulcer bleeding in ASA users is important in reducing morbidity and mortality. Given the uncertain clinical utility of Helicobacter Pylori (Hp) testing in ASA users, this prospective cohort study aims to determine whether testing for Hp will have any impact on the long-term incidence of ulcer bleeding in ASA users with high ulcer risk. The investigators hypothesize that among ASA users with Hp infection and ulcer bleeding, the long-term incidence of recurrent ulcer bleeding with ASA use will be low after eradication of Hp alone.

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT01591486. The sponsor of the trial is Chinese University of Hong Kong and it is looking for 904 volunteers for the current phase.
Official trial title:
A Long-term Prospective Cohort Study of Testing for Helicobacter Pylori and the Long-term Risk of Peptic Ulcer Bleeding With Low-dose Aspirin