Hydrogen peroxide improves the visibility of ulcer bases in acute non-variceal upper gastrointestinal bleeding: a single-center prospective study.

Background: Acute non-variceal upper gastrointestinal bleeding (ANVB) or hemorrhage (used interchangeably) is an emergency. Endoscopically applied hydrogen peroxide (H2O2) has been shown to improve visualization of the ulcer base.

Aims: To test the hypothesis that ulcer base clot clearance with 3% H2O2 improves the visualization of ANVB lesions compared to water alone.