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问题 单项选择题

在治疗肺炎球菌肺炎使用青霉素时，错误的方法是（）

A.一般患者每次肌注80万单位，每8小时1次

B.每日剂量800万单位，加在500毫升输液中缓慢静滴

C.重症患者每日剂量800万单位，分3次静脉滴注

D.静脉滴药时每次用量应在l小时内滴完

E.对青霉素过敏者不可使用此药

答案

参考答案：B

解析：肺炎链球菌肺炎治疗首选青霉素G。一般患者用量为80万单位，每8小时肌注一次。重症患者每日剂量800万单位，分次静脉滴注，6～8小时一次，滴注时每次用量尽可能在1小时内滴完，以便产生有效血浓度。重症及并发脑膜炎者，可增至1000万～3000万U/d，分4次静脉滴注。对青霉素过敏者，或耐青霉素或多重耐药菌株感染者，可用呼吸氟喹诺酮类、头孢噻肟或头孢曲松等药物，多重耐药菌株感染者可用万古霉素、替考拉宁等。

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