RT Book, Section A1 Reid, Sarah M. A2 Tintinalli, Judith E. A2 Stapczynski, J. Stephan A2 Ma, O. John A2 Yealy, Donald M. A2 Meckler, Garth D. A2 Cline, David M. SR Print(0) ID 1121509757 T1 Gastrointestinal Bleeding in Infants and Children T2 Tintinalli’s Emergency Medicine: A Comprehensive Study Guide, 8e YR 2016 FD 2016 PB McGraw-Hill Education PP New York, NY SN 9780071794763 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1121509757 RD 2024/10/10 AB GI bleeding varies in its epidemiology and presentation depending on whether it originates from the upper or lower GI tract. Upper GI (UGI) bleeding is bleeding proximal to the ligament of Treitz, whereas lower GI (LGI) bleeding originates distal to this ligament. UGI bleeding is a relatively uncommon presentation in pediatrics, with one population-based survey reporting an incidence of 1 to 2 per 10,000 children/year.1 LGI bleeding is more common, but most cases are benign and self-limited.2 In one study, LGI bleeding constituted the chief complaint of 0.3% of children presenting to a pediatric ED, but only 4.2% of these patients had bleeding considered to be life-threatening.3