Card 17 / 29: Which of the following is false regarding Antiarrhythmic drugs?
A)
All Class I agents are useful because they block sodium, calcium and potassium channels equally.
B)
Procainamide slows conduction velocity and prolongs the refractory period.
C)
Lidocaine is a Class IB antiarrhythmic drug that keeps sodium channels in an inactivated state.
D)
Flecainide (Class IC sodium channel blocker) was shown to increase the likelihood of death in human clincal trials.
E)
Lidocaine has little change in conduction velocity.
Answer:
A) All Class I agents are useful because they block sodium, calcium and potassium channels equally.
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