In making your decision to treat with procainamide, which of the following statements would be relevant?
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.
Procainamide may worsen or precipitate hypehyroidism
Procainamide is not effective for atrial arrhythmias
Procainamide prolongs the effective refractory period in atrial and ventricular cells
Procainamide commonly induces thrombocytopenia