title: The postextrasystolic T wave change.
mesh_terms: D000200:Action Potentials; D000818:Animals; D002118:Calcium / Q000378:metabolism; D002297:Cardanolides / Q000494:pharmacology; D005117:Cardiac Complexes, Premature / Q000503:physiopathology*; D004285:Dogs; D004562:Electrocardiography; D006321:Heart / Q000187:drug effects; D006329:Heart Conduction System / Q000503:physiopathology*; D006339:Heart Rate; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D010634:Phenobarbital / Q000494:pharmacology; D011048:Polarography; D011188:Potassium / Q000378:metabolism; D012964:Sodium / Q000378:metabolism
chemical_list: D002297:Cardanolides; D012964:Sodium; D011188:Potassium; D002118:Calcium; D010634:Phenobarbital