患者王某因泌尿系感染用青霉素药物肌肉注射治疗1周。由于外出停药1周,故1周后来就诊继续用青霉素治疗,给予接种青霉素皮试。20分钟观察丘疹超过0.5cm,确定阳性反应,故停用青霉素。然而1个小时后患者突然面色苍白、胸闷、呼吸困难、脉搏每分钟160次,立即给予肾上腺素0.1mg肌肉注射,数分钟后 Wang patients with urinary tract infection with penicillin drug intramuscular injection for 1 week. Due to go out for 1 week, so 1 week after treatment with penicillin treatment, given penicillin skin test. Observation of papules 20 minutes over 0.5cm, to determine the positive reaction, it disables penicillin. However, an hour later the patient suddenly pale, chest tightness, difficulty breathing, pulse 160 times per minute, immediately give 0.1mg intramuscular adrenaline, a few minutes later