例1,男,71岁。因解柏油样大便4次和暗红色稀便2次,伴头晕心悸出汗尿少2天。于1993年1月7日急诊入院。过去有反复上腹不适隐痛史和上消化道大出血21次。查体:体温35.8℃,呼吸32次/分,脉率126次/分,血压10/5.5kPa。意识清,严重贫血貌,皮肤粘膜无黄染及出血点;心前区闻及级收缩期 Example 1, male, 71 years old. Due to Xiepaoyou stool 4 times and dark red loose stool 2 times, with dizziness, palpitation sweating urine less 2 days. January 7, 1993 emergency admission. In the past there are repeated abdominal pain and painless upper gastrointestinal bleeding and 21 times. Physical examination: body temperature 35.8 ℃, breathing 32 beats / min, pulse rate 126 beats / min, blood pressure 10 / 5.5kPa. Awareness of consciousness, severe anemia appearance, skin and mucous membrane without yellow dye and bleeding; precordial area smell and systolic