患者女,55岁。主因间断胸骨后疼痛一月,加重2天入院。诊断为冠心病、心绞痛。既往无其他药物过敏史。经药物治疗胸痛缓解。于第五天,加用低分子右旋糖酐治疗。按每分钟2ml滴速静滴,约半小时后,患者自觉咽喉紧缩,心悸、胸闷、呼吸困难、烦躁不安、面色苍白、大汗淋漓、口唇紫绀、四肢厥冷、脉细 Female patient, 55 years old. The main cause of intermittent sternal pain in January, increased 2 days admission. Diagnosis of coronary heart disease, angina. No past history of other drug allergies. Chest pain relief after drug treatment. On the fifth day, add low molecular dextran treatment. 2ml drop per minute intravenous infusion, about half an hour later, the patient conscious throat tightening, palpitations, chest tightness, difficulty breathing, irritability, pale, sweating, lips cyanotic, extremities Jueleng, pulse thinning