Emergency Capsule Endoscopy in Severe GI-bleeding

Inclusion Criteria: patients with signs of severe GI-bleeding (with melena or dark bloody stool) and hemodynamic instability (defined as (pre)collapse or MAP \< 80 mmHg or HR \> 110) and/or drop of hemoglobin \> 2g/dl/d and/or need of transfusion of minimum of 2 packed red cells Exclusion Criteria: missing consent form, pregnancy, origin of bleeding found in upper GI-endoscopy (e.g. blood in the stomach, ulcer, varices with signs of bleeding, mallory-weiss-tear, Angiodysplasia (with signs of bleeding), refluxesophagitis LA C or D) fresh bloody stool, known stenosis of the bowel, known site of bleeding, known inflammatory bowel disease