[Experimental study of electrocardiogram and vectorcardiogram on the localization of the site of origin of ventricular extrasystoles].
D000818:Animals; D005117:Cardiac Complexes, Premature / Q000209:etiology / Q000503:physiopathology*; D004285:Dogs; D004558:Electric Stimulation; D004562:Electrocardiography; D006352:Heart Ventricles / Q000503:physiopathology*; D010477:Perfusion; D010496:Pericardium; D014672:Vectorcardiography