BACKGROUND Although myocardial bridging (MB) is defined as an angiographic phenomenon with a benign course, it has also been associated with adverse cardiovascular events. The effects of exercise on myocardial repolarization in patients with MB were tested in this study, with Tp-e and Tp-e/QT repolarization indexes. MATERIAL AND METHODS A total of 50 patients in whom isolated MB was diagnosed...

BACKGROUND QT dispersion (QTd), which is a measure of inhomogeneity of myocardial repolarization, increases following impaired myocardial perfusion. Its prolongation may provide a suitable substrate for life-threatening ventricular arrhythmias. We investigated the changes in QTd and heart rate variability (HRV) parameters after successful coronary artery revascularization in a patient with chro...

BACKGROUND Several drugs can cause prolonged QT interval, as well as prolonged QT dispersion (QTd) in electrocardiographic (EKG) recordings. QTd may be a potentially sensitive marker of increased risk of cardiac arrhythmias and sudden cardiac death. Metformin is an effective antihyperglycemic agent used in the treatment of diabetes. However, studies have correlated dose-dependent effects of met...

OBJECTIVE The goal of this study was to examine the association between ECG repolarization parameters and mortality in Chagas disease (CD) patients living in the United States. METHODS CD patients with cardiomyopathy (CM) and bundle branch block (BBB) or BBB alone were compared to age- and sex-matched controls. QT interval, QT dispersion (QTd), T wave peak to T wave end duration (Tp-Te) and T...

Background: QT dispersion (QTd) especially after ischemic heart disease and myocardial infarction is a prognostic predictor of mortality, in adult medicine.  Objective: This study was undertaken to determine the correlation between QT dispersion and neonatal stress. Neonates were divided into 3 groups: normal term (30 cases), normal preterm (30 cases) and sick neonates (36 cases), born between ...

Background: The goal was to use surface electrocardiographic (ECG) indicators detect COVID-19's malignant arrhythmic potential.
 Methodology: In 51 COVID-19 patients and 40 control subjects, the ECG parameters PR, QT, QTc, QTd, TPe, Tpe/QTc were assessed. had substantially higher mean QTc (410.8 24.3 msec vs. 394.6 20.3 msec, p.001), (0.19 0.02 0.18 0.04, p =.036), median QTd (47.52 46.5) ...

The significance of cardiac autonomic neuropathy (CAN) has not been fully appreciated and there is no unified treatment algorithm. Aim: To investigate the effects benfotiamine (BFT) on corrected QT interval (QTc), dispersion (QTd) spatial QRS-T angle in patients with type 2 diabetes mellitus (T2DM) CAN. 32 T2DM definite stage CAN were allocated to two groups: control (n = 15) received standard ...

OBJECTIVE QT dispersion (QTd) has been proposed as a marker of ventricular repolarization inhomogeneity and several investigations have proved the relationship between it and cardiac ischemia, ventricular arrhythmia and sudden cardiac death. The aim of this study was to assess the relation between coronary artery involvement and QTd, and QTc dispersion (QTcd) in the acute phase of Kawasaki dise...

OBJECTIVE To assess the feasibility of 12-lead electrocardiographic (ECG) measures such as P wave dispersion (PWd), QT interval, QT dispersion (QTd), Tp-e interval, Tp-e/QT and Tp-e/QTc ratio in predicting poor outcome in patients diagnosed with sepsis in pediatric intensive care unit (PICU). METHODS Ninety-three patients diagnosed with sepsis, severe sepsis or septic shock and 103 age- and s...