This concept covers the clinical framework for evaluating gastrointestinal (GI) bleeding in emergency medicine, organized around the anatomical distinction between upper GI bleeding (stomach and proximal small intestine) and lower GI bleeding (distal small intestine and large intestine). It establishes the major etiologies for each category, their relative prevalence and morbidity, and the physiologic basis for characteristic stool and vomitus presentations (hematemesis, coffee-ground emesis, melena, hematochezia) as functions of bleeding location, volume, and transit time. The domain integrates gastroenterology pathophysiology with emergency medicine principles of hemodynamic assessment (the ABCs) and differential diagnosis, including extra-GI sources that can mimic GI bleeding.
This concept covers the clinical framework for evaluating gastrointestinal (GI) bleeding in emergency medicine, organized around the anatomical distinction between upper GI bleeding (stomach and prox…