RT Book, Section A1 Rozenfeld, Ranna A. SR Print(0) ID 1152488942 T1 Gastrointestinal Bleeding T2 The PICU Handbook YR 2018 FD 2018 PB McGraw-Hill Education PP New York, NY SN 9781259834370 LK accesspediatrics.mhmedical.com/content.aspx?aid=1152488942 RD 2024/04/25 AB Gastrointestinal (GI) bleeding is categorized into upper GI bleed (UGIB), bleeding from a source proximal to the ligament of Treitz, and lower GI bleed (LGIB) occurring distal to this duodenojejunal junction point.