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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