Fibrillation atriale

La fibrillation atriale, anciennement appelée fibrillation auriculaire (fréquemment abrégée en « FA ») est le plus fréquent des troubles du rythme cardiaque. Elle fait partie des troubles du rythme supra-ventriculaires. Elle correspond à une action non coordonnée des cellules myocardiques auriculaires, entraînant une contraction rapide et irrégulière des oreillettes cardiaques. Le terme de fibrillation auriculaire est d'usage fréquent, mais depuis 1998 la dénomination académique est « fibrillation atriale », les oreillettes cardiaques ayant été renommées « atria » dans la nouvelle nomenclature anatomique. D'autres appellations sont également rencontrées : arythmie complète par fibrillation auriculaire (AC/FA ou ACFA) et parfois tachy-arythmie complète par fibrillation auriculaire (TAC/FA). La fibrillation atriale est parfois dénommée par abus de langage « arythmie » ; cependant ce terme est synonyme de « trouble du rythme », notion plus large, qui inclut en conséquence la fibrillat

À propos de ce résultat

Cette page est générée automatiquement et peut contenir des informations qui ne sont pas correctes, complètes, à jour ou pertinentes par rapport à votre recherche. Il en va de même pour toutes les autres pages de ce site. Veillez à vérifier les informations auprès des sources officielles de l'EPFL.

Publications associées (38)

Publications associées

Chargement

Personnes associées (6)

Personnes associées

Chargement

Unités associées (3)

Unités associées

Chargement

Concepts associés (104)

Concepts associés

Chargement

Cours associés (3)

Cours associés

Chargement

Séances de cours associées (3)

Séances de cours associées

Chargement

Electr(on)ic palpitations: a visitors' pavilion for the Bieudron power plant, Switzerland

Michael Jakob

The electric power system has often been compared to a circulatory system, and telecommunication and informational complexes likened to nervous systems. Such characterisations are rigorous only for those aspects that bring the utility system closer to a living system: its mechanisms of control and regulation. Copyright © Cambridge University Press 2010.

2010

Chargement

Cardiac ablation, How Contact Force influences lesion quality

Olivier Frémont

Cardiac ablation is a worldwide accepted minimally invasive procedure to treat Atrial Fibrillation (AF). It consists in creating lesions with a catheter in the cardiac tissue in order to cut off specific electrical pathways. During this project, based on preclinical studies, we investigated and modeled the lesion formation process. This led first to identify and quantify the different mechanisms which take place in the heating process. The model developed gave rise to a Lesion Depth Index to quantify the lesion depth based on clinical parameters used to treat patient: Force Power and Duration. Another part of this project was the analysis of the clinical study EFFICAS 1 focused on the local outcome of the Pulmonary Veins Isolation (PVI). Combining the lesion depth model with the clinical analysis permitted to upgrade the analysis and confirmed that the model developed was relevant for clinical analysis. Moreover, this clinical study, allowed us to discover that the smallest lesion performed in a given microscopic area is a key predictor for isolation defect in PVI. Therefore, we showed that performing transmural ablation at the first shot is essential for a good PVI.

2010

Chargement

Intracardiac organization indices for the monitoring of atrial fibrillation

Sarah Volorio

Atrial fibrillation (AF) is the most common arrhythmia observed in clinical practice. It is responsible for about one third of hospitalizations related to problems of arrhythmia. AF is an important clinical entity due to the increased risk of morbidity and mortality. The consequences of AF most frequently found are hemodynamic function impairment (loss of atrial synchronized contraction, irregular and inadequately rapid ventricular rate), atriogenic thromboembolic events and tachycardia induced atrial and ventricular cardiomyopathy. With the present increase of life expectancy, AF prevalence is expected to double in the next fifty years, in particular in western countries. In collaboration with the Division of Cardiology of CHUV, a catheter ablative protocol mainly based on pulmonary vein isolation (PVI) and complex fractionated elctrograms ablations was defined in order to develop new strategies to decrease procedural time and ablation extent. More precisely, surface EGC as intracardiac electrogram (EGM) signals were recorded from different catheters at specific locations before ablation during and after PVI. The purpose of this project is to evaluate the ability of known (AF cycle length) and new intracardiac organization indices based on recorded surface ECGs and EGM signals to monitor AF organization during stepwise ablation of persistent AF.

2011

Chargement

Cœur

Le cœur est un organe musculaire creux qui assure la circulation sanguine en pompant le sang vers les vaisseaux sanguins et les cavités du corps à travers des contractions rythmiques. L'adjectif c

Trouble du rythme cardiaque

Les troubles du rythme cardiaque ou arythmies sont une famille de maladies cardiaques.

Un rythme sinusal correspond au rythme cardiaque normal, c'est-à-dire piloté par le nœud sinusal avec conse

Cardiologie

La cardiologie (du grec , « cœur » et , « parole, discours, sujet d'entretien ») est une branche de la médecine qui traite des troubles du cœur ainsi que de certaines parties du système circulatoir

COM-500: Statistical signal and data processing through applications

Building up on the basic concepts of sampling, filtering and Fourier transforms, we address stochastic modeling, spectral analysis, estimation and prediction, classification, and adaptive filtering, with an application oriented approach and hands-on numerical exercises.

MATH-449: Biostatistics

This course covers statistical methods that are widely used in medicine and biology. A key topic is the analysis of longitudinal data: that is, methods to evaluate exposures, effects and outcomes that are functions of time. While motivated by real-life problems, some of the material will be abstract

ME-481: Biomechanics of the cardiovascular system

This lecture will cover anatomy and physiology of the cardiovascular system, biophysics of the blood, cardiac mechanics, hemodynamics and biomechanics of the arterial system, microcirculation and biomechanics of the venous system.