Low heart rate variability and increased QT dispersion are risk factors for cardiac mortality in
various patient populations. We studied dispersion of QT interval, ie an index of …

Left ventricular hypertrophy is an independent risk factor for sudden cardiac death in
hypertension, but the mechanisms of electrical instability associated with hypertrophy are …

Left ventricular hypertrophy is a risk factor for sudden death. Malignant ventricular
arrhythmias originate from altered cardiac repolarization. Ample data have described spatial …

Prolonged QT interval is suggested to indicate an increased risk of sudden cardiac death in
certain clinical conditions such as diabetes mellitus. We investigated whether the individual …

The circadian variation of QT interval dispersion and its correlation with heart rate variability
(HRV) was examined in 17 normal subjects by using 24-hour recordings of three-lead …

Elevated QT interval variability is a predictor of malignant ventricular arrhythmia, but the
underlying mechanisms are incompletely understood. A recent study in dogs with pacing …

Objective In hypertensive patients, left ventricular hypertrophy (LVH) predicts increased
mortality, in part due to an increased incidence of sudden death. Repolarization-related …

A prolonged QT interval is a risk factor for ischemic heart disease in hypertensive subjects.
Heart rate variability (HRV) is both an index of autonomic function and an important …

As QT variability increases and heart rate variability diminishes, the QT variability index
(QTVI)-a non-invasive measure of beat-to-beat fluctuations in QT interval on a single ECG …

Background: QT‐corrected interval dispersion (QTcD) is an indirect index of increased
heterogeneity of ventricular repolarization. However, the prognostic value of (QTcD) in …