某病人单次静脉注射某药物lOmg.半小时血药浓度是多少(已知t1/2=4h,V=

题库总管2019-12-17  15

问题 某病人单次静脉注射某药物lOmg.半小时血药浓度是多少(已知t1/2=4h,V=60L)()。

选项 A:0.153μg/mLB:0.225μg/mLC:0.301μg/mLD:0.458μg/mLE:0.610μg/mL

答案A

解析半衰期t1/2=0.693/k;单室模型静脉注射给药血药浓度lgC=(-kt/2.303)+lgC0;k=0.693/t1/2=0.693/4=0.173lgC=lgC0-kt/2.303=lg10/60-0.173×0.5/2.303=-0.815故C=0.153μg/mL
转载请注明原文地址:https://ti.zuoweng.com/ti/GKpEKKKQ