Complex Informative ECG Parameters for Suspicion Coronary Artery Lesions

J. Blužas, S. Kaminskienė, G. Urbonavičienė, Z. Bertašienė, A. Bastys, R. Žaliūnas, I. Blužaitė, P. Ammann, H. Rickli

Abstract


The aim of the study was to determine a complex of informative electrocardiogram (ECG) parameters in revealing coronary artery lesions. Parameters of heart rate variability, QT and T loop morphology were analysed in 199 patients (additional group for QT dispersion analysis only, consisted of 94 patients). Informative signs to determine coronary artery stenosis ≥ 50 % were following: T loop index ≥ 1,5, T loop area ≥ 226 and age ≥ 50 years. QTd and QTcd were not informative parameters for this determination. By applying a complex of parameters (αP – angle between QRS and P vectors; αQRS-T angle between QRS and T vectors; QTc and age) sensitivity for detection coronary artery stenosis has increased to 85 %, specificity to 65 % (r=0,5). Ill. 2, bibl. 11 (in English; summaries in English, Russian and Lithuanian).


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Print ISSN: 1392-1215
Online ISSN: 2029-5731