title: Effect of extrasystoles on idioventricular rhythm.
mesh_terms: D000200:Action Potentials; D000818:Animals; D005117:Cardiac Complexes, Premature / Q000503:physiopathology*; D004285:Dogs; D004562:Electrocardiography; D006327:Heart Block / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology*; D066298:In Vitro Techniques; D008564:Membrane Potentials; D012756:Sheep