Overload of the cardiac left ventricle causes opposite local changes in repolarization duration (activation-recovery intervals) on the right-and left-ventricular epicardium, which depend on the duration of overload. The activation-recovery intervals on the right-ventricular lateral surface decrease after 1-min overload, but increase after 10-min overload. The length of activation-recovery intervals on the lateral surface of the left-ventricular apex increases after 10-min aortic stenosis more markedly in comparison with that after 1-min overload. Decrease/increase of local lengths of activation-recovery intervals results in modification of the general sequence of cardiac ventricular surface repolarization.
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Translated from Byulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 146, No. 8, pp. 144–146, August, 2008
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Sedova, K.A., Vityazev, V.A., Azarov, J.E. et al. Repolarization of epicardial ventricular surface of rabbit heart in acute stenosis of the aortic arch. Bull Exp Biol Med 146, 180–181 (2008). https://doi.org/10.1007/s10517-008-0246-8
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DOI: https://doi.org/10.1007/s10517-008-0246-8