TY - CHAP M1 - Book, Section TI - Gastrointestinal Bleeding A1 - Sokolosky, Mitchell C. A2 - Cydulka, Rita K. A2 - Fitch, Michael T. A2 - Joing, Scott A. A2 - Wang, Vincent J. A2 - Cline, David M. A2 - Ma, O. John Y1 - 2017 N1 - T2 - Tintinalli's Emergency Medicine Manual, 8e AB - Gastrointestinal (GI) bleeding is a common problem in emergency medicine and should be considered life-threatening until proven otherwise. Acute upper GI bleeding is more common than lower GI bleeding. Upper GI bleeding is defined as that originating proximal to the ligament of Treitz. Upper GI bleeds can result from peptic ulcer disease, erosive gastritis and esophagitis, esophageal and gastric varices, and Mallory–Weiss syndrome. Lower GI bleeds most commonly result from diverticular disease, followed by colitis, adenomatous polyps, and malignancies. What may initially appear to be lower GI bleeding may be upper GI bleeding in disguise. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1143140516 ER -