Location of epicardial pacemaker electrodes and myocardial contractility.
D000818:Animals; D004562:Electrocardiography; D004566:Electrodes; D006321:Heart / Q000187:drug effects / Q000502:physiology*; D007545:Isoproterenol / Q000494:pharmacology; D009119:Muscle Contraction; D010138:Pacemaker, Artificial / Q000295:instrumentation*; D010477:Perfusion; D051381:Rats
D007545:Isoproterenol