患者,男性,39岁。因足底被铁钉刺伤,急诊入院,医生下达医嘱:破伤风抗毒素1500u肌内注射。皮试后20 分钟患者局部胂, 硬结> 1.5 c m ,红晕>100px,自述有痒感,应如何处理
A.
将抗毒素分4等份,分次注射
B.
将抗毒素分4次逐渐增加剂量注射
C.
待患者痒感消失后再全量注射
D.
将抗毒素稀释,分2次注射
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