2000
DOI: 10.1111/j.1540-8167.2000.tb00061.x
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Abstract: Spatial heterogeneity of ventricular repolarization exists and is measurable in 12-lead resting ECGs. It differs between different clinical groups, but the so-called QT dispersion is unrelated to it.

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Cited by 143 publications
(140 citation statements)
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“…However, Kors et al suggested an important point that at all electrode sites, repolarization potentials must have principally the same duration by simple electric field theory (29). Other studies also suggested that QT dispersion is an attribute of T-loop morphology or projection effect (30,31). In other words, these reports suggested that QT dispersion does not reflect a dispersion of ventricular repolarization.…”
Section: Discussionmentioning
confidence: 99%
“…However, Kors et al suggested an important point that at all electrode sites, repolarization potentials must have principally the same duration by simple electric field theory (29). Other studies also suggested that QT dispersion is an attribute of T-loop morphology or projection effect (30,31). In other words, these reports suggested that QT dispersion does not reflect a dispersion of ventricular repolarization.…”
Section: Discussionmentioning
confidence: 99%
“…However, the relationship between QT d and VRD resulted controversial [44], as has been shown to mainly reflect the different lead projections of the T wave loop rather than any other type of dispersion. As a result, QT d has not been further considered as a VRD index.…”
Section: ) Dispersion Of Repolarization Reflected On Ecg Intervalsmentioning
confidence: 99%
“…and can be interpreted as the relative energy of the non-dipolar components [44], [53]. This is based on the hypothesis that in normal conditions, the ECG can be explained by the first three components (dipolar components).…”
Section: Wherementioning
confidence: 99%
“…This measure was claimed to be correlated with APD dispersion in animals and humans (Zabel et al 1998). However, Malik et al (2000) have shown that the measurement might be affected by inaccuracies in the determination of the T-wave end, the existence of U waves or notched T waves. QT d is significantly different between patients with a wide and a narrow T-wave loop, and a correspondence has been observed between QT d and the T-wave loop morphology (Kors et al 1999) rather than with VRD.…”
Section: (A ) Dispersion Of Repolarization Reflected On Ecg Intervalsmentioning
confidence: 99%
“…The sum of the first three eigenvalues represents the energy of the dipolar components of the repolarization, while the rest of eigenvalues represent non-dipolar components. The T-wave residuum, T WR , measures the relative energy of the non-dipolar components (Acar et al 1999;Malik et al 2000;Smetana et al 2004a,b),…”
Section: (B ) Dispersion Of Repolarization Reflected On T-wave Morphomentioning
confidence: 99%