Publications associées à Nœud atrioventriculaire

Correlation between conduction velocity and frequency analysis in patients with atrial fibrillation using high-density charge mapping

Spectral analysis of atrial signals has been used to identify regions of interest in atrial fibrillation (AF). However, the relationship to the atrial substrate is unclear. In this study, we compare regions with dominant frequency (DF), simultaneously dete ...

SPRINGER HEIDELBERG2022

Schmitt trigger-based control strategy for the discharge phase of an ultra-high-voltage bidirectional flyback

Yves Perriard, Alexis Boegli, Raphaël Johannes Charles Mottet

The control strategy to discharge a capacitive load such as a dielectric elastomer actuator charged to several kilo-volts is critical to obtain a safe and reliable actuation. In the case of this publication, an ultra-high voltage bidirectional flyback conv ...

IEEE2021

High-speed mechano-active multielectrode array for investigating rapid stretch effects on cardiac tissue

Herbert Shea, Matthias Imboden, Samuel Rosset, Alexandre Poulin, Christian Dellenbach, Stephan Rohr, Etienne de Coulon

Systematic investigations of the effects of mechano-electric coupling (MEC) on cellular cardiac electrophysiology lack experimental systems suitable to subject tissues to in-vivo like strain patterns while simultaneously reporting changes in electrical act ...

Nature Research2019

Systems and methods for rate-compatible polar codes for general channels

Seyed Hamed Hassani, Marco Mondelli

According to certain embodiments, a transmit node in a wireless communications system includes a first universal rate-compatible polar encoder and a transmitter. The first universal rate-compatible polar encoder is configured for a family of two or more ty ...

2019

Experimental study of atrial fibrillation cycle length during rapid atrial septal pacing

Jean-Marc Vesin, Adrian Luca, Sasan Yazdani

Computer model-based simulations have shown that rapid stimulation at 60-100% of atrial fibrillation cycle length (AFCL) from a ring of electrodes located around the septum may induce local capture in both atria for most AF dynamics. The present study aims ...

2017

Observer Placement for Source Localization: the Effect of Budgets and Transmission Variance

Patrick Thiran, Laura Elisa Celis, Brunella Marta Spinelli

When an epidemic spreads in a network, a key question is where was its source, i.e., the node that started the epidemic. If we know the time at which various nodes were infected, we can attempt to use this information in order to identify the source. Howev ...

2016

Correlation Dimension as a Measure of the Atrial Fibrillation Capture during Atrial Septal Pacing

Jean-Marc Vesin, Adrian Luca

In the present model-based study, the correlation dimension (D2) was used as a measure of the effectiveness of atrial septal pacing during atrial fibrillation (AF). From ongoing simulated atrial fibrillation, instantaneous transmembrane potential maps were ...

2014

Atrial septal pacing for the termination of atrial fibrillation: study in a biophysical model of human atria

Jean-Marc Vesin, Laurent Renaud Uldry, Lukas Kappenberger

Aims While successful termination by pacing of organized atrial tachycardias has been observed in patients, single site rapid pacing has not yet led to conclusive results for the termination of atrial fibrillation (AF). The purpose of this study was to eva ...

Oxford Univ Press2012