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.
Ker
J
J
Department of Physiology, University of Pretoria and Pretoria Heart Hospital, P.O. Box 24318, Gezina, Pretoria, 0031 South Africa. jker@wol.co.za
Webb
E C
EC
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*