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 …

Simple Summary The ambulatory ECG (AECG) is an important diagnostic tool for many
heart electrophysiology-related cases. This review covers some key Ambulatory ECG …

Cardiac arrhythmias are a major contributor to population morbidity and mortality. Enormous
advances in arrhythmia management have occurred over the 60 years since the founding of …

Background and objective T-wave alternans (TWA) is a fluctuation of the ST–T complex of
the surface electrocardiogram (ECG) on an every–other–beat basis. It has been shown to be …

In cardiac muscle, the process of excitation-contraction coupling (ECC) describes the chain
of events that links action potential induced myocyte membrane depolarization, surface …

Atrial fibrillation is the most common sustained arrhythmia and its prevalence is rapidly rising
with the aging of the population. Cardiac alternans, defined as cyclic beat-to-beat …

Repolarization alternans (RA) has been implicated in the pathogenesis of ventricular
arrhythmias and sudden cardiac death. We developed a 12-lead, blue-tooth/Smart-Phone …

Key points Cardiac alternans refers to a beat‐to‐beat alternation in contraction, action
potential (AP) morphology and Ca2+ transient (CaT) amplitude, and represents a risk factor …

Aims: Microvolt T-wave alternans (TWA), an oscillation in T-wave morphology of the
electrocardiogram (ECG), has been associated with increased susceptibility to ventricular …

Background: Repolarization alternans (RA) has been implicated in the pathogenesis of
ventricular arrhythmias and sudden cardiac death. Methods: We have developed a real …