对某患者静脉滴注单室模型药物,已知该药的t=1.9h,V=100L,若要使稳态血

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问题 对某患者静脉滴注单室模型药物,已知该药的t=1.9h,V=100L,若要使稳态血药浓度达到3μg/ml,则k等于A.50.42mg/hB.100.42mg/hC.109.42mg/hD.120.42mg/hE.121.42mg/h

选项 A.50.42mg/h
B.100.42mg/h
C.109.42mg/h
D.120.42mg/h
E.121.42mg/h

答案 C

解析 本题考查单室模型静脉滴注给药稳态血药浓度的求算。单室模型药物静脉滴注的稳态血药浓度,故k=kVC,已知t=1.9h,C=3μg/ml=3mg/L,因此≈109.42mg/h。故本题答案应选C。
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