上消化道出血是指屈氏韧带以上的消化道，包括食管、胃、十二指肠或胰胆等病

上消化道出血是指屈氏韧带以上的消化道，包括食管、胃、十二指肠或胰胆等病变引起的出血，胃空肠吻合术后的空肠病变出血亦属这一范围。大量出血是指在数小时内失血量超出1000ml或循环血容量的20%，其临床主要表现为呕血和（或）黑粪，往往伴有血容量减少引起的急性周围循环衰竭，是常见的急症，病死率高达8%～13.7%。[1]

上消化道出血是指屈氏韧带以上的消化道，包括食管、胃、十二指肠或胰胆等病变引起的出血，胃空肠吻合术后的空肠病变出血亦属这一范围。 大量出血是指在数小时内失血量超出1000ml或循环血容量的20%，其临床主要表现为呕血和（或）黑粪，往往伴有血容量减少引起的急性周围循环衰竭，是常见的急症，病死率高达8%～13.7%。 [1]

Upper gastrointestinal bleeding refers to the gastrointestinal tract above the flexor ligament, including esophageal, gastric, duodenal or pancreaticobiliary diseases caused by bleeding, gastrojejunostomy postoperative jejunal lesions bleeding also belongs to this range. Massive hemorrhage refers to the loss of more than 1000 ml of blood or 20% of circulating blood volume in a few hours. Its clinical manifestations are hematemesis and (or) black stool, often accompanied by acute peripheral circulatory failure caused by reduced blood volume. It is a common emergency, and the mortality rate is as high as 8% - 13.7%. [1]<br>