79 valproic acid影響phenytoin之機制為何?
(A)誘導代謝酵素
(B)競爭作用受體
(C)抑制腸胃道吸收
(D)置換(displace)血中白蛋白結合
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統計: A(249), B(261), C(135), D(3043), E(0) #722706
統計: A(249), B(261), C(135), D(3043), E(0) #722706
詳解 (共 7 筆)
#2906191
29 下列何組藥物,彼此因競爭性與白蛋白(albumin)結合,而影響藥物在體內之分佈?
(A) MAOIs+tyramine
(B) Digoxin+antibiotics
(C) Warfarin+phenobarbital
(D) Phenytoin+valproic acid
(C) Warfarin = high protein binding; Phenobarbital = low protein binding
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2
#1169934
valproic acid that leads to phenytoin displacement from plasmatic proteins and inhibits phenytoin metabolism, thereby increasing the concentration of free drug in the serum.
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1
#4131749
Valproic acid : protein binding 73.9% to 92.7% , CYP2C9 代謝
Phenytoin : protein binding 92.2%
這樣會被競爭嗎? 感覺Phenytoin競爭力比較強
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2