Dispersion of ventricular repolarization: Temporal and spatial
نویسندگان
چکیده
منابع مشابه
Dispersion of ventricular repolarization: reality? Illusion? Significance?
The QT interval is considered to be a surrogate of cellular action potential duration. However, it yields a limited view of the complex electrogenesis of the ventricular repolarization (VR). Evidence of T-wave end inequality among surface ECG traces back to Wilson et al, and it was recently revived by the concept of dispersion. Because of its apparent simplicity, QT dispersion became fashionabl...
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Spatial dispersion of repolarization in the form of transmural, trans-septal and apico-basal dispersion of repolarization creates voltage gradients that inscribe the J wave and T wave of the ECG. Amplification of this spatial dispersion of repolarization (SDR) underlies the development of life-threatening ventricular arrhythmias associated with inherited or acquired ion channelopathies giving r...
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disease in Southern Europe; however, differences in genotpye frequencies most likely cannot explain differences in associations between genotype and risk of ischemic heart disease in different parts of the world. Other possible explanations for such differences exist. First, the apolipoprotein E polymorphism may act as a susceptibility mutation for ischemic heart disease; such mutations need ce...
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The effects of left ventricular hypertrophy (LVH) on the generation of phase 2 early afterdepolarization (EAD) and transmural dispersion of repolarization (TDR) were assessed using arterially perfused rabbit ventricular wedge preparations. Transmembrane action potentials from epicardium, subendocardium, and endocardium were simultaneously recorded together with a transmural ECG. Transmural acti...
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ژورنال
عنوان ژورنال: World Journal of Cardiology
سال: 2020
ISSN: 1949-8462
DOI: 10.4330/wjc.v12.i9.437