Cranefield, P F Effect of verapamil on the noraml action potential and on a calcium-dependent slow response of canine cardiac Purkinje fibers. [electronic resource] - Circulation research Feb 1974 - 204-13 p. digital Publication Type: Journal Article ISSN: 0009-7330 Standard No.: 10.1161/01.res.34.2.204 doi Subjects--Topical Terms: Action Potentials--drug effectsAnimalsArrhythmias, Cardiac--etiologyCalcium--pharmacologyCardiac VolumeDepression, ChemicalDogsHeart Conduction System--drug effectsMembrane Potentials--drug effectsSodium--pharmacologyTetraethylammonium Compounds--pharmacologyTime FactorsVerapamil--pharmacology