Warfarin's mechanism of action is
AInhibiting Vitamin K dependent carboxylation
BChelating calcium ions
CInhibiting antithrombin III activity
DInhibiting thrombin activity
The anticoagulant activity of warfarin can be reduced by all of the following except.
AAspirin
BRifampin
CVitamin K
DCarbamazepine
Which of the following clotting factors in a patient on Warfarin therapy would show the earliest decrease in functional activity?
AFactor VII
BFactor IX
CFactor X
DProthrombin (Factor 2)
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