The patients who admit to emergency department with upper gastrointestinal system bleeding will undergo a clinical evaluation with Rockall Risk Scoring System. The patients with Rockall score of 1 or less will be discharged with medical treatment, and will have an elective upper gastrointestinal endoscopy in the end of the 30th day. The impact of Rockall Risk Scoring System on assessing the necessity of emergency endoscopy, length of hospital stay, morbidity, and mortality in low-risk patients will be evaluated.

The patients who admit to emergency department with symptoms of upper gastrointestinal system bleeding will undergo a clinical evaluation. First, diagnosis of upper gastrointestinal system bleeding will be established by combined physical examination and nasogastric tube application. After a certain diagnosis, all of the patients will be scored according to Rockall Risk Scoring System. The patients with a 1 or less Rockall score will have conservative treatment including mucosal protective agent (sucralfat), proton pump inhibitors (omeprazole, lansoprazole, pantoprazole), and hemodynamic monitorization. Should Rockall score and hemodynamic parameters remain unchanged or get improved in the end of 6 hours after admission, oral feeding will be started and the patient will be discharged with anti-ulcer medication (mucosal protective agent and proton pump inhibitor, PO). These patients will be scheduled for upper gastrointestinal endoscopy at 30th day. The patients who have: an initial Rockall score of 2 or greater, an increase in Rockall score or deterioration in hemodynamic parameters during observation, will have emergency endoscopy and will be excluded from the study.

Inclusion Criteria:

• Clinical diagnosis of upper gastrointestinal system bleeding
• Rockall score of 1 or less
• Volunteers
• Agreement with the terms of informed consent

Exclusion Criteria:

• Uncertain clinical diagnosis of upper gastrointestinal system bleeding
• Rockall score of 2 or greater
• Deterioration in hemodynamic parameters during follow-up
• Unwilling patients to join the study
• Disagreement with the terms of informed consent

All patients older than 18 years with upper gastrointestinal hemorrhage.