题目内容

小儿肺炎心衰治疗中，关于洋地黄应用的描述哪项不正确

A. 心率增快，超过160次／min时可考虑应用
B. 肝肋下迅速增大2cm以上时可考虑应用
C. 首次剂量给予口服1／2饱和量
D. 首次剂量给予1／3饱和量
E. 不与钙剂同时应用

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