TY - CHAP M1 - Book, Section TI - Chapter 16. Gastrointestinal Bleeding A1 - Price, Timothy G. A1 - Armstrong, Zachary E. A2 - Stone, C. Keith A2 - Humphries, Roger L. Y1 - 2011 N1 - T2 - CURRENT Diagnosis & Treatment Emergency Medicine, 7e 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. SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=55748869 ER -