title: A simple test to determine the site of bleeding in the upper part of the gastrointestinal tract.
abstract: A noninvasive test has been developed to distinguish variceal bleeding from bleeding due to gastritis or ulcer disease. The test is based on the ability of shed blood to lower the pO2 of the gastric saline solution irrigant. It correctly predicted the site of bleeding in four of five patients with variceal hemorrhage and nine of nine patients with bleeding from gastritis or ulcers.
mesh_terms: D003937:Diagnosis, Differential; D004932:Esophageal and Gastric Varices / Q000097:blood* / Q000150:complications; D005756:Gastritis / Q000175:diagnosis; D006471:Gastrointestinal Hemorrhage / Q000097:blood / Q000175:diagnosis*; D006801:Humans; D010100:Oxygen / Q000097:blood*; D010313:Partial Pressure; D013276:Stomach Ulcer / Q000175:diagnosis
chemical_list: D010100:Oxygen