Abstract
Measuring the QT interval parameters on the electrocardiogram (ECG) is considered in calculating the inhomogeneity of the repolarization index in the cardiac ventricles in terms of the QT interval dispersion (QTD) in terms of vector cardiographic and biophysical models for the electrical heart activity. In accordance with the laws of electrodynamics, the length of the ventricular complex should be the same in all leads, with the possible exception of some special cases. QTD arises in practical measurements from various objective and subjective factors that influence the error in measuring the ECG repolarization parameters.
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Translated from Izmeritel’naya Tekhnika, No. 2, pp. 68–73, February, 2007.
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Baum, O.V., Popov, L.A. & Voloshin, V.I. Dispersion of electrocardiogram QT interval. Part 1. Informative parameter or measurement error?. Meas Tech 50, 205–211 (2007). https://doi.org/10.1007/s11018-007-0048-9
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DOI: https://doi.org/10.1007/s11018-007-0048-9