Results 11 to 20 of about 1,198,632 (198)

Epicardial Fibrosis Explains Increased Endo–Epicardial Dissociation and Epicardial Breakthroughs in Human Atrial Fibrillation [PDF]

Frontiers in Physiology, 2020
BackgroundAtrial fibrillation (AF) is accompanied by progressive epicardial fibrosis, dissociation of electrical activity between the epicardial layer and the endocardial bundle network, and transmural conduction (breakthroughs).
Ali Gharaviri, Ali Gharaviri, Elham Bidar, Mark Potse, Mark Potse, Mark Potse, Stef Zeemering, Sander Verheule, Simone Pezzuto, Rolf Krause, Jos G. Maessen, Angelo Auricchio, Angelo Auricchio, Ulrich Schotten   +13 more
doaj   +2 more sources

Simultaneous epicardial and noncontact endocardial mapping of the canine right atrium: simulation and experiment. [PDF]

PLoS ONE, 2014
Epicardial high-density electrical mapping is a well-established experimental instrument to monitor in vivo the activity of the atria in response to modulations of the autonomic nervous system in sinus rhythm.
Sepideh Sabouri, Elhacene Matene, Alain Vinet, Louis-Philippe Richer, René Cardinal, J Andrew Armour, Pierre Pagé, Teresa Kus, Vincent Jacquemet   +8 more
doaj   +2 more sources

Mapping and Surgical Ablation of Focal Epicardial Left Ventricular Tachycardia [PDF]

Case Reports in Cardiology, 2011
We describe a technical challenge in a 17-year-old patient with incessant epicardial focal ventricular arrhythmia and diminished LV function. Failure of ablation at the earliest activated endocardial site during ectopy suggested an epicardial origin ...
Arif Elvan, Hauw T. Sie, Anand R. Ramdat Misier, Andre C. Linnenbank, Peter Paul H. M. Delnoy, Jacques M. T. de Bakker   +5 more
doaj   +2 more sources

Detection of endo-epicardial atrial low-voltage areas using unipolar and omnipolar voltage mapping [PDF]

Frontiers in Physiology, 2022
Background: Low-voltage areas (LVA) can be located exclusively at either the endocardium or epicardium. This has only been demonstrated for bipolar voltages, but the value of unipolar and omnipolar voltages recorded from either the endocardium and ...
Mathijs S. Van Schie, Paul Knops, Lu Zhang, Frank R. N. Van Schaagen, Yannick J. H. J. Taverne, Natasja M. S. De Groot   +5 more
doaj   +2 more sources

Enhancing Geometric Fidelity of 3-Dimensional Electroanatomic Mapping During Open Chest Epicardial Radiofrequency Catheter Ablation

Journal of Investigative Medicine High Impact Case Reports, 2019
Although electroanatomic mapping techniques have been previously applied to open chest epicardial ablation procedures, such efforts have often been limited by significant geometric distortions introduced by the need to use nonstandard mapping patch ...
Gabriel E. Soto MD, PhD, MHCDS, FACC, FHRS, Joseph G. Gibbons RN   +1 more
doaj   +2 more sources

Epicardial Ventricular Tachycardia Ablation Guided by a Novel High‐Resolution Contact Mapping System: A Multicenter Study [PDF]

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2018
Background Mapping using a multipolar catheter with small and closely spaced electrodes has been shown to improve the validity of electrograms to identify endocardial critical sites of reentry isthmus and foci of earliest activation.
Rui Shi, Zhong Chen, Andrianos Kontogeorgis, Frederic Sacher, Paolo Della Bella, Caterina Bisceglia, Ruairidh Martin, Christian Meyer, Stephan Willems, Vias Markides, Philippe Maury, Tom Wong   +11 more
doaj   +2 more sources

Epicardial Lineages

Journal of Developmental Biology, 2013
The epicardium is the mono-layered epithelium that covers the outer surface of the myocardium from early in cardiac development. Long thought to act merely passively to protect the myocardium from frictional forces in the pericardial cavity during the ...
Andreas Kispert, Franziska Greulich
doaj   +2 more sources

Inverse Solution Mapping of Epicardial Potentials [PDF]

Circulation: Arrhythmia and Electrophysiology, 2012
Background— Catheter ablation of ventricular tachycardia (VT) is still one of the most challenging procedures in cardiac electrophysiology, limited, in part, by unmappable arrhythmias that are nonsustained or poorly tolerated.
John L, Sapp, Fady, Dawoud, John C, Clements, B Milan, Horácek   +3 more
openaire   +2 more sources

Novel insights in pathophysiology of postoperative atrial fibrillationCentral MessagePerspective

JTCVS Open, 2021
Objectives: Atrial extrasystoles are usually benign; however, they can also trigger atrial fibrillation. It is most likely that if atrial extrasystoles provoke a larger amount of conduction disorders and a greater degree of endo-epicardial asynchrony ...
Rohit K. Kharbanda, MD, Mathijs S. van Schie, MSc, Yannick J.H. J. Taverne, MD, PhD, Natasja M.S. de Groot, MD, PhD, Ad J.J. C. Bogers, MD, PhD   +4 more
doaj   +1 more source

Intrapericardial cardiosphere-derived cells hinder epicardial dense scar expansion and promote electrical homogeneity in a porcine post-infarction model

Frontiers in Physiology, 2022
The arrhythmic substrate of ventricular tachycardias in many structural heart diseases is located in the epicardium, often resulting in poor outcomes with currently available therapies.
Alejandro Carta-Bergaz, Alejandro Carta-Bergaz, Gonzalo R. Ríos-Muñoz, Gonzalo R. Ríos-Muñoz, Gonzalo R. Ríos-Muñoz, Verónica Crisóstomo, Verónica Crisóstomo, Francisco M. Sánchez-Margallo, Francisco M. Sánchez-Margallo, María J. Ledesma-Carbayo, María J. Ledesma-Carbayo, Javier Bermejo-Thomas, Javier Bermejo-Thomas, Javier Bermejo-Thomas, Francisco Fernández-Avilés, Francisco Fernández-Avilés, Francisco Fernández-Avilés, Ángel Arenal-Maíz, Ángel Arenal-Maíz   +18 more
doaj   +1 more source