[Evaluation of the reserve contractile potentials of acutely ischemic myocardium by postextrasystolic potentiation].
D000818:Animals; D003327:Coronary Disease / Q000503:physiopathology*; D004285:Dogs; D004558:Electric Stimulation; D006352:Heart Ventricles; D009200:Myocardial Contraction; D013599:Systole