Hematemesis is the medical term used to describe vomiting blood. The blood can be bright red, dark red, black, or dark brown, or resemble coffee grounds. It is caused by internal gastrointestinal ...

UGI bleeding was defined as hematemesis, coffee-ground vomit or ... obtained through history and routine laboratory testing: Blood urea < 6.5 mmol/L, hemoglobin > 13 mg/dL for men and > 12 mg ...