Publications de Vincent Jacquemet

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Atrial arrhythmias are the most frequent rhythm disorders in humans and often lead to severe complications such as heart failure and stroke. While different mapping techniques have provided significant information on the electrophysiological processes associated with atrial fibrillation (AF), the mechanisms underlying AF initiation and maintenance remain unclear. Hence the treatment of atrial arrhythmias is still based on empirical considerations. To assist the study of the complex spatio-temporal dynamics

The steady states of the Fenton–Karma, the Courtemanche and the Nygren cell models were studied by determining the fixed points of the dynamical system describing their cell kinetics. The linear stability of the fixed points was investigated, as well as th ...

Quantifying the role of atrial ectopic foci in the initiation and the maintenance of atrial fibrillation (AF) is a relevant clinical problem. This study aims at assessing the relation between the activity level of an ectopic focus and the complexity of the ...

Objective: The objective of the study was to design a lead system aimed at studying atrial fibrillation (AF), while being anchored to the standard 12-lead system. Methods: The location of 4 of the 6 precordial electrodes was optimized while leaving the rem ...

Objective: To design a VCG lead system dedicated to the analysis of atrial fibrillation. Methods: Body surface potentials during atrial fibrillation were simulated by using a biophysical model of the human atria and thorax. The XYZ components of the equivalent dipole were derived from the Gabor-Nelson equations. These served as the gold standard while searching for methods for the derivation of the vectorcardiogram from a limited number of electrode positions and their transfer coefficients. Six electrode c

The research discussed in this article is motivated by the search for an optimal classification of the different types of atrial fibrillation (AF) on the basis of recorded atrial signals. This would facilitate the selection of an optimal therapy. This arti ...

The membrane kinetics of human atrial myocytes as formulated by Courtemance, Ramierz and Nattel has been studied while focusing on its progression toward stationary solutions during long term repetitive stimulation. An algorithm is presented for finding th ...

Vincent Jacquemet

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A biophysical model of atrial fibrillation and electrograms : formulation, validation and applications

Steady-state Solutions in Mathematical Models of Atrial Cell Electrophysiology and their Stability

Activity Level of an Atrial Ectopic Focus Observed Through the Equivalent Dipole: a Biophysical Model

Adaptation of the standard 12-lead electrocardiogram system dedicated to the analysis of atrial fibrillation

Vectorcardiographic lead systems for the characterization of atrial fibrillation

Analysis of electrocardiograms during atrial fibrillation

Cancellation of Ventricular Activity in the ECG: Evaluation of novel and existing methods

Spectral analysis of the ECG identifies dominant rotors during atrial fibrillation

Finite Volume Stiffness Matrix for Solving Anisotropic Cardiac Propagation in 2D and 3D Unstructured Meshes

Wavelength and Vulnerability to Atrial Fibrillation: Insights from a Computer Model of Human Atria

Genesis of the P wave: Atrial Signals as Generated by the Equivalent Double Layer Source Model

Phase-Rectified Signal Averaging Used to Estimate the Dominant Frequencies in ECG Signals During Atrial Fibrillation

Pacemaker Activity Resulting from the Coupling with Nonexcitable Cells

Ensuring stability in models of atrial kinetics

Evaluation of Ablation Patterns Using a Biophysical Model of Atrial Fibrillation

Dominant Frequency of Atrial Fibrillation Estimated from the Surface ECG

Periods of Prolonged Transient Alternans in APD Revealed by Delivery of an Extrastimulus near Period-Doubling Bifurcation

Spatiotemporal QRST Cancellation Method Using Separate QRS and T-Waves Templates

Spatial Dynamic of Atrial Activity Assessed by Vectorcardiogram: from Sinus Rhythm to Atrial Fibrillation

Characterizing Anti-Tachy Pacing Efficiency in a Numerical Model of Human Atrial Arrhythmias