Probenecid can increase the efficacy of penicillin, because ( )
A. probenecid can promote the absorption of penicillin
B. they have synergic bactericidal mechanisms
C. probenecid can inhibit penicillinase
D. probenecid can promote metabolism of penicillin
E. probenecid competes with penicillin for excretion in the renal tubules
查看答案
The correct treatment and rational for phenobarbital sodium poisoning is that ( )
A. alkalizing the urine, the dissociation is reduced, so that the reabsorption of phenobarbital sodium in the renal tubules is reduced
B. alkalizing the urine, the dissociation is increased, so that the reabsorption of phenobarbital sodium in the renal tubules is reduced
C. acidifing the urine, the dissociation is increased, so that the reabsorption of phenobarbital sodium in the renal tubules is reduced
D. acidifing the urine, the dissociation is reduced, so that the reabsorption of phenobarbital sodium in the renal tubules is increased
E. acidifing the urine, the dissociation is increased, so that the reabsorption of phenobarbital sodium in the renal tubules is increased
In pH=5.0 solution, a weak acid drug dissociates about 50%, the pKa value is ( )
A. 4
B. 5
C. 6
D. 7
E. 8
If t1/2 of certain drug is 8 hours, according to the first order elimination kinetics, the time required to reach steady state is about ( )
A. 8 hours
B. 16 hours
C. 24 hours
D. 40 hours
E. 50 hours
You need to gradually reduce the amount of propranolol after you take for a long time to treat hypertension before switching to other medications. This is to avoid ( ).
A. side reaction
B. toxic reaction
C. residual effect
D. withdrawal reaction
E. allergic reaction
微信支付 
支付宝支付