Upper gastrointestinal bleeding is one of the frequently observed pathologies in the emergency department, which involves around 150 hospitalizations worldwide and mortality is related to the coexisting comorbidities of patients and their advanced age. The present investigation aimed to determine the factors associated with a mortality predictor in high gastrointestinal bleeding at the Regional Hospital of Loreto during the period from July 2021 to July 2022 using the AIMS65 scale. A descriptive, observational, cross-sectional, and retrospective study was conducted, where the medical records of adult patients hospitalized in the medicine service of the Regional Hospital of Loreto during the period from July 2021 to July 2022 were evaluated. A mortality rate of 10.5% was obtained with a statistically significant association with the use of the AIMS65 scale (p<0.05), male sex prevalence wi...