Clinical Characteristics Analysis and Prediction Model Establishment of Fatal Esophageal and Gastric Variceal Bleeding

The purpose of this study is to analyze the clinical characteristics of patients with fatal acute variceal bleeding (AVB) and establish a mortality risk prediction model to identify patients at high risk of death after admission, so as to guide clinical practice, further optimize the allocation of emergency resources, and further reduce the mortality of AVB patients.

Inclusion Criteria:History of cirrhosis/previous history of endoscopic varicose veins/undiagnosed liver disease but signs related to liver disease, hematemesis or melena; The diagnosis of cirrhosis is based on liver biopsy or the usual clinical and radiological criteria;AVB was confirmed by endoscopy without special medical history;Exclusion Criteria:Patients who cannot obtain complete data (vital signs, medical history, laboratory tests and other data are seriously missing);Patients with upper gastrointestinal bleeding have no evidence of AVB.