Electrocardiographic surrogates of structural myocardial alterations in the Dorper sheep heart.
In this study we evaluated the validity of well-known human electrocardiographic markers of myocardial pathology in Dorper sheep. These markers include: the duration of the QRS complex of premature ventricular complexes (PVCs), the presence of notching of the QRS complex of PVCs and change of the ST-segment of PVCs. It was shown that these three electrocardiographic phenomena correlate with myocardial pathology in the hearts of Dorper sheep. We also describe a new electrocardiographic indicator of myocardial pathology, namely an increase in the frequency of cardiac memory T waves as a new electrocardiographic surrogate for myocardial pathology in the hearts of Dorper sheep.
Department of Physiology, University of Pretoria and Pretoria Heart Hospital, P.O. Box 24318, Gezina, Pretoria, 0031 South Africa. jker@wol.co.za
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J
Ker
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EC
Webb
D000818:Animals; D004562:Electrocardiography / Q000379:methods / Q000662:veterinary*; D006321:Heart / Q000502:physiology; D006329:Heart Conduction System / Q000473:pathology* / Q000502:physiology; D008297:Male; D009206:Myocardium / Q000473:pathology*; D012756:Sheep / Q000502:physiology*; D012757:Sheep Diseases / Q000473:pathology*