患者,男,28岁,因“便血12h”由外院转入。患者12h前突发大量暗红色血便,便血量约3000ml,面色苍白,反应差,既往健康。外院诊断为“下消化道出血”后予以输血、补液等治疗,治疗及转诊过程中共输血7U,并以多巴胺及间羟胺维持血压。发病过程中,患者胃肠减压抽出液由黄绿色液逐渐转 Patients, male, 28 years old, due to “bloody diarrhea 12h” transferred from the outer court. Suddenly a large number of patients before 12h dark red bloody stool, blood in the amount of about 3000ml, pale, poor response, past health. Outside the hospital diagnosed as “lower gastrointestinal bleeding” after transfusion, rehydration and other treatment, treatment and referral process of total blood transfusion 7U, and dopamine and meta-hydroxylamine to maintain blood pressure. In the process of onset, patients with gastrointestinal decompression pumping fluid gradually turn yellow-green liquid