消化道出血一般分为上消化道出血与下消化道出血。上消化道出血主要来自食道、胃、十二指肠以及肝胆系统的出血,主要症状表现为呕血和(或)黑便;下消化道出血则泛指来自远端小肠、盲肠至直肠末端一段大肠在内的肠道出血(但最常见的内痔、肛裂出血不包括在内),主要症状为便血。消 Gastrointestinal bleeding is generally divided into upper gastrointestinal bleeding and lower gastrointestinal bleeding. Upper gastrointestinal bleeding mainly from the esophagus, stomach, duodenum and hepatobiliary system bleeding, the main symptoms of hematemesis and (or) melena; lower gastrointestinal bleeding refers to from the distal small intestine, cecum to the distal rectum of a large intestine Including intestinal bleeding (but the most common internal hemorrhoids, anal fissure bleeding are not included), the main symptom is blood in the stool. Cancel