title: Shortening of the action potential and reduction of pacemaker activity by lidocaine, quinidine, and procainamide in sheep cardiac purkinje fibers. An effect on Na or K currents?
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D001464:Barium / Q000494:pharmacology; D002304:Cardiac Pacing, Artificial; D004594:Electrophysiology; D006329:Heart Conduction System / Q000187:drug effects; D007473:Ion Channels / Q000187:drug effects; D008012:Lidocaine / Q000494:pharmacology*; D011342:Procainamide / Q000494:pharmacology*; D011690:Purkinje Fibers / Q000187:drug effects; D011802:Quinidine / Q000494:pharmacology*; D013779:Tetrodotoxin / Q000494:pharmacology; D013997:Time Factors
chemical_list: D007473:Ion Channels; D001464:Barium; D013779:Tetrodotoxin; D008012:Lidocaine; D011802:Quinidine; D011342:Procainamide