Management of Acute Upper Gastrointestinal Bleeding from Swallowed Blood Due to Epistaxis

Diagnostic Considerations

• Upper‑GI source is more likely than lower‑GI pathology when melena follows epistaxis – melena (black, tarry stools) indicates bleeding proximal to the ligament of Treitz, supporting a swallowed‑blood upper‑GI source rather than a colonic lesion. 3
• Upper endoscopy (EGD) should be considered before colonoscopy if epistaxis is controlled but melena persists, to rule out a primary upper‑GI lesion. 4

Hemodynamic Assessment

• Absence of shock despite a notable hemoglobin decline suggests that the bleeding is not a massive primary GI hemorrhage; patients remain hemodynamically stable in this scenario. 1
• Shock index > 1 (heart rate divided by systolic blood pressure) signals hemodynamic instability and warrants urgent imaging (e.g., CT angiography) before endoscopic evaluation. 2

Transfusion Strategy

• Restrictive transfusion threshold – in patients with a hemoglobin around 120 g/L and no known cardiovascular disease, a transfusion trigger of 70 g/L is appropriate unless the patient becomes unstable. 5

Procedural Recommendations

• Avoid routine nasogastric tube placement – it does not reliably improve diagnostic accuracy, does not affect clinical outcomes, and can be complicated in up to one‑third of patients. 3
• Do not proceed directly to colonoscopy when melena is present, because the finding most often points to an upper‑GI source; colonoscopy is unlikely to reveal the bleeding origin in this context. 4