患者,男,18岁。因呕血30min入院。患者30min内无诱因呕鲜红色血3次,量约500ml,伴恶心,头晕,心慌,乏力,上腹痛。既往肝硬化病史5年,未正规诊治。否认家族性遗传病史,无药物过敏史。体检:体温36.2℃,呼吸19次/min,脉搏 Patient, male, 18 years old. Due to hematemesis 30min admission. Patients within 30min induced vomit bright red blood 3 times, about 500ml, with nausea, dizziness, palpitation, fatigue, abdominal pain. Past history of cirrhosis 5 years, not formal diagnosis and treatment. Denied familial genetic history, history of drug allergy. Physical examination: body temperature 36.2 ℃, breathing 19 times / min, pulse