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Surgery General 3a520842

In making your decision to treat with procainamide, which of the following statements would be relevant?

A

Procainamide may worsen or precipitate hypehyroidism

B

Procainamide is not effective for atrial arrhythmias

C

Procainamide prolongs the effective refractory period in atrial and ventricular cells

D

Procainamide commonly induces thrombocytopenia

High-Yield Explanation

Procainamide prolongs the effective refractory period in atrial and ventricular cells. Ref: KDT, tth Edition, Page 511,512 Procainamide prolongs refractory period by blocking sodium channels and by prolonging the AP. All of the other statements are false.

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