The heart-rate dynamics are one of the most analyzed physiological interactions. Many
mathematical methods were proposed to evaluate heart-rate variability. These methods …

The complexity, nonlinearity and nonstationarity of the cardiovascular system typically defy
comprehensive and deterministic mathematical modeling, except from a statistical …

Atrial fibrillation (AF) is the most common cardiac arrhythmia in humans, with an estimated
lifetime prevalence of 25%. It is characterized by irregular and disorganized electrical …

A new method for quantifying the organization of single bipolar electrograms recorded in the
human atria during atrial fibrillation (AF) is presented. The algorithm relies on the …

Objective: Atrial flutter (AFl) is a common arrhythmia that can be categorized according to
different self-sustained electrophysiological mechanisms. The non-invasive discrimination of …

Introduction Electrical contact mapping provides a detailed view of conduction patterns in
the atria during atrial fibrillation (AF). Identification of repetitive wave front propagation …

Background Traditional mapping of atrial fibrillation (AF) is limited by changing electrogram
morphologies and variable cycle lengths. Objective We tested the hypothesis that …

Atrial fibrillation (AF) is regarded as a complex arrhythmia, with one or more co-existing
mechanisms, resulting in an intricate structure of atrial activations. Fractionated atrial …

Our contribution focuses on the characterization of sleep apnea from a cardiac rate point of
view, using Recurrence Quantification Analysis (RQA), based on a Heart Rate Variability …

Background Electrogram (EGM) morphology recurrence (EMR) mapping of persistent atrial
fibrillation (AF) quantifies consistency of activation and is expected to be high and rapid near …