BACKGROUND We retrospectively investigated the value of clinical and ECG findings as well as QT-QRS dispersion in predicting the risk of sudden death in patients with arrhythmogenic right ventricular cardiomyopathy (ARVC). METHODS AND RESULTS Duration and interlead variability of the QT interval and QRS complex were measured manually from standard ECGs in 20 sudden death victims with ARVC dia...

The arrhythmogenic role of increased dispersion of repolarization (dispersion) was studied in 23 open-chest dogs using six simultaneously recorded monophasic action potentials (MAPs) from the ventricular surface and programmed ventricular premature stimulation (VPS). Increased dispersion was induced by generalized hypothermia (29 degrees C) and regional warm blood (38-43 degrees C) perfusion th...

The purpose of this study was to verify the spatial distribution of myocardial repolarization heterogeneity using a newly developed 187-channel signal-averaged vector-projected ECG (187-ch SAVP-ECG). We constructed corrected recovery time (RTc) and Tpeak-end (corrected Tp-e) dispersion maps using a 187-ch SAVP-ECG based on vector-projection theory using a Mason-Likar lead system. We compared th...

The article entitled Effect of transcatheter aortic valve replacement on P-wave duration, P-wave dispersion and left atrial size by Dursun, et al. has contributed to our knowledge regarding the positive effects of transcatheter aortic valve replacement (TAVR) procedure on atrial electrical remodeling. In this study, TAVR procedure led to a decrease on P-wave duration and P-wave dispersion.  As...

AIM The right atrium pressure load is increased in pulmonary stenosis (PS) that is a congenital anomaly and this changes the electrophysiological characteristics of the atria. However, there is not enough data on the issue of P wave dispersion (PWD) in PS. METHODS Forty-two patients diagnosed as having valvular PS with echocardiography and 33 completely healthy individuals as the control grou...

We have read the article ‘‘Increased P-wave dispersion (PWD) in patients with newly diagnosed lichen planus (LP)’’ by Sahin et al. (1). These researchers aimed to investigate PWD in patients with LP, and they concluded that PWD increased in the surface electrocardiographic measurements of LP patients. This result may be important for the early detection of subclinical cardiac involvement. This ...

Results: BAI scores (26.6 ± 11.8 vs. 3.4 ± 3.3, p< 0.001) and BDI scores (12.6 ± 4 vs. 3.7 ± 4.5, p< 0.001) were signifi cantly higher in the patient group compared to the controls. P wave dispersion (Pd) [50.0 ± 17.5 miliseconds (ms) vs. 23.4 ± 7.7 ms, p< 0.001] and mean QT dispersion (QTd) (50.5 ± 18.1 ms vs. 28.3 ± 11.4 ms, p< 0.001) signifi cantly increased in the GAD patient group compared...

BACKGROUND Limited data are available on the effects of a ketogenic diet on dispersion duration of P-wave and QT-interval measures in children. We searched for the changes in these measures with serial electrocardiograms in patients treated with a ketogenic diet. METHODS Twenty-five drug-resistant patients with epilepsy treated with a ketogenic diet were enrolled in this study. Electrocardiog...