Patients with cardiac diseases or conditions with high risk of developing cardiac diseases
undergo risk assessment by cardiologists, primary care physicians, and scientists based on …

Myocardial fibrosis is a common pattern in the setting of different heart diseases, and
promotes ventricular tachyarrhythmias by creating a vulnerable substrate for reentrant …

Sinus node dysfunction may be either transient (reversible/physiological) due to the
involvement of the autonomic nervous system or pharmaceuticals, or chronic due to …

Previous studies have suggested benefits of applying fractal analysis to intervals between R
waves in electrocardiography as an additional prognostic marker. The aim of this study was …

The most cutting-edge issue in the research on aging is the quest for biomarkers that
transcend molecular and cellular domains to encompass organismal-level implications. We …

T-wave alternans (TWA) reflects every-other-beat alterations in the morphology of the
electrocardiogram ST segment or T wave in the setting of a constant heart rate, hence, in the …

Background Noninvasive electrocardiographic (ECG) markers are promising arrhythmic risk
stratification tools for identifying sudden cardiac death. However, little is known about the …

Heart rate variability (HRV) analysis has been performed on ECG-derived data sets for more
than 170 years but is currently undergoing a rapid evolution, thanks to the expansion of the …

Sudden cardiac death and arrhythmia-related events in patients with non-ischaemic dilated
cardiomyopathy (NICM) have been significantly reduced over the last couple of decades as …

Abstract Introduction Great part of Chagas disease (ChD) mortality occurs due to ventricular
arrhythmias, and autonomic function (AF) may predict unfavorable outcomes. We aimed to …