Gastrointestinal Bleeding Management

Clinical Presentation and Risk Stratification

Patients presenting with gastrointestinal bleeding should be immediately stratified as hemodynamically stable or unstable using shock index, with a shock index >1 indicating instability requiring urgent intervention, as recommended by the American College of Gastroenterology 1, 2
Hematemesis, melena, or hematochezia are the primary visible signs of GI bleeding, according to the European Society of Gastrointestinal Endoscopy 3
Digital rectal examination findings are crucial for confirming bleeding and may detect approximately 40% of rectal carcinomas, as stated by the American Gastroenterological Association 3, 1
The Oakland score can be used for stable patients with lower GI bleeding to determine management pathway, with components including age, gender, previous LGIB admission, digital rectal examination findings, heart rate, systolic blood pressure, and hemoglobin level, as recommended by the British Society of Gastroenterology 4, 2

Place at least two large-bore IV catheters for rapid volume expansion and initiate fluid resuscitation with crystalloids to restore hemodynamic stability, as recommended by the American College of Emergency Physicians 5
For patients requiring blood transfusion, use restrictive transfusion threshold (Hb trigger 70 g/L, target 70-90 g/L) for patients without cardiovascular disease, and higher threshold (Hb trigger 80 g/L, target ≥100 g/L) for patients with cardiovascular disease, according to the American College of Cardiology 1, 2
Correct coagulopathy (INR >1.5) or thrombocytopenia (<50,000/μL) with fresh frozen plasma or platelets respectively, as stated by the American Society of Hematology 3

For hemodynamically unstable patients, perform CT angiography immediately to localize bleeding before any intervention, as recommended by the Society of Interventional Radiology 1, 2, 5
Consider surgery for patients with hemorrhagic shock who are non-responders to resuscitation, according to the American College of Surgeons 5
Following positive CTA, proceed to catheter angiography with embolization within 60 minutes for hemodynamically unstable patients, as recommended by the Society of Interventional Radiology 1, 2

For patients on warfarin with unstable GI hemorrhage, interrupt warfarin therapy immediately and reverse anticoagulation with prothrombin complex concentrate and vitamin K, as recommended by the American College of Chest Physicians 1, 2, 5
In-hospital mortality is approximately 3.4% overall but rises to 18% for inpatient-onset LGIB and 20% for patients requiring ≥4 units of red cells, according to the American Gastroenterological Association 1, 2
Mortality in GI bleeding is generally related to comorbidity rather than exsanguination, as stated by the European Society of Gastrointestinal Endoscopy 1, 5