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消化道出血在医学上并非是一种疾病,它和“发烧”一样只是某些疾病的一个症状。消化道出血包括上消化道出血和下消化道出血。上消化道出血是指由食管、胃、十二指肠或胰、胆等部位的病变引起的出血(包括胃空肠吻合术后空肠病变引起的出血)。另外,患有各类紫癜、白血病,再障性贫血、血友病等血液系统疾病以及长期应用阿司匹林、糖皮质激素类药物或酗酒等也能引起上消化道出血。上消化道大出血是指患者上消化道的出血量
Gastrointestinal bleeding is not medically a disease, it is just a symptom of certain diseases, like fever. Gastrointestinal bleeding includes upper gastrointestinal bleeding and lower gastrointestinal bleeding. Upper gastrointestinal bleeding refers to the esophagus, stomach, duodenum or pancreas, gallbladder and other parts of the disease caused by bleeding (including gastrointestinal jejunostomy jejunal lesions caused by bleeding). In addition, suffering from various types of purpura, leukemia, aplastic anemia, hemophilia and other blood diseases and long-term use of aspirin, glucocorticoid drugs or alcoholism can also cause upper gastrointestinal bleeding. Upper gastrointestinal bleeding refers to patients with upper gastrointestinal bleeding