Introduction: Bleeding from the gastrointestinal tract (GIT) is one of the most frequent emergency conditions and reasons for hospital admission. The most common manifestation of bleeding from the upper part of the digestive system is melena, hematemesis and hematochezia. The most common diseases in the upper part of the digestive system are: peptic ulcer disease, Mallory-Weiss syndrome and esophageal varices. The increasingly elderly European population suffers from several chronic diseases at the same time and enjoys many harmful habits that can be and are precipitating causes of bleeding and conditions that lead to an increased risk of bleeding. Objective: To analyze the causes of manifest bleeding from the upper gastrointestinal tract during admission to the Internal Medicine Intensive Care Department of Zadar General Hospital. Subjects and methods: A retrospective study was conducted in which the demographic data of the subjects (age, gender) and anamnestic data from the medical history (symptoms - melena, hematemesis, hematochezia; comorbidities - peptic ulcer disease, Mallory-Weiss syndrome, esophageal varices) were collected. and the habits of the respondents (smoking, alcohol consumption). Results: The analysis of the collected data showed the fact that the majority of respondents had manifest bleeding caused by peptic ulcer. Most respondents were in the age range of 70-79 years. According to gender, the majority of subjects are male n=37, and the frequency of bleeding is higher in subjects with comorbidities. Conclusion: The analysis of the collected data indicates that the majority of respondents who were admitted to the Department of Intensive Internal Care had manifest bleeding from the stomach caused by peptic ulcer, mostly in elderly people who had comorbidities.