OBJECTIVE To assess the relation between P-wave and QT dispersions in elderly patients with heart failure. METHODS Forty-seven elderly patients (75.6+/-6 years) with stable heart failure in NYHA functional classes II or III and with ejection fractions of 37+/-6% underwent body surface mapping to analyze P-wave and QT dispersions. The degree of correlation between P-wave and QT dispersions was...

AIMS This study was designed to test the hypothesis that acute psychological stress is capable of inducing an increase in the dispersion of repolarization in patients with underlying coronary artery disease. METHODS AND RESULTS Twenty four patients undergoing elective coronary angiography were studied, 17 with significant coronary artery disease and seven with normal coronary arteries. Follow...

Complications of mitral valve prolapse (MVP), among which serious ventricular arrhythmia and sudden death are of major importance, affect many individuals due to the high incidence of MVP itself in the community despite the actual low incidence of these complications. The present study investigated the incidence and distribution of ventricular arrhythmias according to their severity and relatio...

I n the last few years, QT dispersion constitutes an intensively studied, possible prognostic factor of arrhythmic and, in general, cardiac risk as regards patients suffering from various heart diseases. High values of QT dispersion reflect an inhomogeneity of the repolarization time of the ventricular myocardium that may be the substrate for the development of malignant ventricular arrhythmias...

We read the original article by Nuis, et al. [1] and the reply by Dogan, et al. [2] with great interest. Nuis, et al. [1] examined whether transcatheter aortic valve implantation (TAVI) in patients suffering from severe aortic stenosis led to changes in corrected QT dispersion (cQTD), previously used to predict arrhythmic risk. Dogan, et al. [2] proposed that a different marker, transmural disp...

OBJECTIVES This study tested the correlation of QT and JT dispersion and other potentially useful electrocardiographic (ECG) indexes with dispersion of repolarization and recovery time. BACKGROUND Dispersion of ventricular repolarization is currently being assessed noninvasively from the surface ECG by means of QT and JT dispersion, although their correlation with dispersion of repolarization...

UNLABELLED Co-morbidity between physical disease, especially cardiovascular, and psychological disturbances is well documented. In psychiatric patients, the potential for dysrhythmogenic incidences is increased by the fact that many psychiatric medications influence cardiovascular function. AIM The aim of the study was to examine the dysrhythmogenic potential of 30 psychiatric patients (group...