Myocardial contractility in healthy rabbits.
In 75 healthy rabbits the systolic times intervals (STI) and their indexes of the left-ventricle were determined for establishing the normal range of these values. In the analysis the effects of the heart rate on the values of these parameters were taken into account. A correlation was found between the heart rate and the QT interval (r = -0.8673), total electromechanical systole - QS2 (r = -0.5557), heart sounds interval - S1S2 (r = -5696), left ventricular ejection time - LVET (r = -0.4745), pre-ejection period - PEP (r = -2288), isovolumic contraction time - ICT (r = -0.2570). No correlation was found between the heart rate and the electromechanical delay - Q-1 (r = -0.0226).
D000818:Animals; D005260:Female; D006334:Heart Function Tests; D006339:Heart Rate; D008297:Male; D009200:Myocardial Contraction; D011817:Rabbits; D013599:Systole; D016276:Ventricular Function