内科学_消化道出血
题目内容

Which of the following is not true about upper gastrointestinal (GI) bleeding

2021-06-18

A.Hematemesis and melena are the most common manifestations of an acute epi­sode of upper GI bleeding

B.Melena can result when as little as 5mL of blood instilled into the upper GI tract

C.Peptic ulcer is the most common cause of acute upper GI bleeding

D.Patients more commonly bleed from duodenal ulcers than from gastric ulcers

E.Endoscopy is the first line modality for identifying the source of upper GI bleeding

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