Periodic paralysis and ventricular tachycardia: possible role of calcium channel blockers.

Few patients have been reported with familial periodic paralysis and ventricular tachycardia. The natural history of these cases was unfavorable, with most dying because of a presumed cardiac dysrhythmia. We report for the first time the results of an electrophysiologic study of a similar case and the successful use of calcium channel blockers, shedding light on the possible mechanism and management of these patients.