Use of QT Dispersion Measured on Treadmill Exercise Electrocardiograms for Detecting Restenosis after Percutaneous Transluminal Coronary Angioplasty.

Long term effects of hormone replacement therapy on heart rate variability, QT interval, QT dispersion and frequencies of arrhytmia

“…High levels of interlead dispersion have been correlated with an increased incidence of ventricular arrhytmias [8,9]. QTd has been demonstrated to increase during myocardial ischaemia [10], and to decrease reversal of the ischemic state following thrombolytics [11] or angioplasty [12] QTd has also been demonstrated to decrease in menopausal patients with syndrome X who received estrogen.…”

The Relation of QT Dispersion and Localized QT Difference to Coronary Pathology in a Population with Unstable Coronary Artery Disease

“…3 QTd is decreased by PTCA 4 and increased by restenosis. 5 QTd increases during the initial course of acute myocardial infarction 6,7 whereas successful thrombolysis decreases QTd. 8 The variable has been thought to reflect the local repo-larization inhomogeneity, 9−12 and ischemia is one possible cause of the inhomogeneity.…”