Ultra-rapid delayed rectifier channels: molecular basis and therapeutic implications.

Abstract excerpt

The ultrarapid delayed rectifier channels have attracted considerable interest as targets for 'atrial-selective' antiarrhythmic drugs because they contribute to atrial but not to ventricular repolarization. Thus, I(Kur) channel blockers are expected to prolong selectively the atrial effective refractory period without inducing proarrhythmic effects due to excessive ventricular action potential prolongation. Here...

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