RT Book, Section A1 Price, Timothy G. A1 Armstrong, Zachary E. A2 Stone, C. Keith A2 Humphries, Roger L. SR Print(0) ID 55748869 T1 Chapter 16. Gastrointestinal Bleeding T2 CURRENT Diagnosis & Treatment Emergency Medicine, 7e YR 2011 FD 2011 PB The McGraw-Hill Companies PP New York, NY SN 978-0-0-07-170107-5 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=55748869 RD 2024/04/19 AB For the majority of patients presenting with gastrointestinal (GI) bleeding, hematemesis, hematochezia, or melena will be the chief complaint. Occasionally, patients may present with only dizziness, weakness, or syncope. If no obvious cause of shock is present, gastric lavage and a rectal examination should be performed promptly as part of the initial assessment. The severity of blood loss must be assessed quickly so that lifesaving therapeutic interventions can be instituted. Factors that increase the morbidity and mortality are hemodynamic instability, ongoing symptoms, inability to clear bleeding with lavage, age over 60, and other comorbidities.