Results 91 to 100 of about 1,321,275 (276)

A new algorithm to diagnose atrial ectopic origin from multi lead ECG systems - insights from 3D virtual human atria and torso [PDF]

, 2015
Rapid atrial arrhythmias such as atrial fibrillation (AF) predispose to ventricular arrhythmias, sudden cardiac death and stroke. Identifying the origin of atrial ectopic activity from the electrocardiogram (ECG) can help to diagnose the early onset of ...
Alday, Erick A. Perez, Butters, Timothy D., Colman, Michael A., Hancox, Jules C., Higham, Jonathan, Langley, Philip, Workman, Antony J., Zhang, Henggui   +7 more
core   +2 more sources

Synchronization of Pacemaking in the Sinoatrial Node: A Mathematical Modeling Study

Frontiers of Physics, 2018
Computational studies using mathematical models of the sinoatrial node (SAN) cardiac action potential (AP) have provided important insight into the fundamental nature of cell excitability, cardiac arrhythmias, and potential therapies. While the impact of
Daniel H. Gratz, Birce Onal, Alyssa Dalic, Thomas J. Hund   +3 more
semanticscholar   +1 more source

Gap junctional and ephaptic coupling in cardiac electrical propagation: homocellular and heterocellular perspectives

The Journal of Physiology, EarlyView.
Abstract figure legend Intricate cellular electrical coupling networks in the heart. Various cell types couple the central cardiomyocyte through gap junctional contacts, with the exception of neurons. Whether ephaptic coupling (EpC) occurs in homocellular or heterocellular contexts beyond cardiomyocyte–cardiomyocyte interactions remains unclear ...
Xiaobo Wu, Laura Beth Payne, Robert G. Gourdie   +2 more
wiley   +1 more source

High resolution 3-Dimensional imaging of the human cardiac conduction system from microanatomy to mathematical modeling [PDF]

, 2017
Cardiac arrhythmias and conduction disturbances are accompanied by structural remodelling of the specialised cardiomyocytes known collectively as the cardiac conduction system.
A Atkinson, B Schmitt, CM Ambrosi, CM Ambrosi, D Sánchez-Quintana, E VR de Castroviejo, F Davies, GV Chow, H Dobrzynski, H Dobrzynski, H Kurosawa, ID Greener, J Li, J Zhao, JC Hutchinson, JC Jarvis, KH Yiu, KHWJ Tusscher ten, M Loukas, M Smerup, M Smerup, MR Boyett, MR Boyett, N Chandler, N Piazza, N-Y Chan, NJ Chandler, NS Jeffery, O Aslanidi, OV Aslanidi, OV Aslanidi, PM Gignac, PW Oosthoek, RC Truex, RH Anderson, RH Anderson, RS Stephenson, RS Stephenson, S Dawkins, S Inada, S Yoo, T Nikolaidou, T-a Matsuyama, TA Csepe, TD Butters, VV Fedorov, VV Fedorov, WJ Hucker, Y Wang, Y-S Ko   +49 more
core   +1 more source

Sympathetic stimulation can compensate for hypocalcaemia‐induced bradycardia in human and rabbit sinoatrial node cells

The Journal of Physiology, EarlyView.
Abstract figure legend AC: adenylyl cyclase, APT: adenosine triphosphate, AMP: adenosine monophosphate, cAMP: cyclic adenosine monophosphate, PDE: phosphodiesterase, PKA: protein kinase A, PPT: protein phosphatase, P: phosphorylation, RyR: ryanodine receptor, SERCA: sarcoplasmic/endoplasmic reticulum Ca2+‐adenosine triphosphatase, SR: sarcoplasmic ...
Moritz Linder, Tomas Stary, Gergő Bitay, Norbert Nagy, Axel Loewe   +4 more
wiley   +1 more source

Estudio del sistema de marcapasos auriculares en el corazón del perro [PDF]

, 1998
Inclou referències ...
Bethencourt, Armando, Ferreira, Ignacio, Gómez Jaume, Alfredo, Palou, Andreu, Pastelin, Gustavo   +4 more
core  

Electrocardiogram events detection [PDF]

, 2011
This work aims to create a system of medical diagnosis of the Electrocardiogram (ECG). The events of the ECG are related with the functioning of the heart and different disorders of the heart functioning have their own ECG pattern allowing the connection
R.C. Guimarães, S.S. Mader, W.Y. Yang
core   +1 more source

Mathematical model of the zebrafish ventricular cardiomyocyte action potential and calcium transient

The Journal of Physiology, EarlyView.
Abstract figure legend This study presents the development and validation of the first biophysically detailed computational model of the zebrafish ventricular action potential (AP). The model is based on a human cardiomyocyte framework and reparameterized using published and newly generated patch‐clamp recordings of zebrafish ionic currents.
Ludovica Cestariolo, Zachary D. Long, Arie O. Verkerk, Jose M. Ferrero, T. Alexander Quinn, Jose F. Rodriguez Matas   +5 more
wiley   +1 more source

An integrated platform for 2‐D and 3‐D optical and electrical mapping of arrhythmias in Langendorff‐perfused rabbit hearts

The Journal of Physiology, EarlyView.
Abstract figure legend Integrated multimodal platform for panoramic cardiac mapping in isolated heart experiments. On the left, an image of the experimental setup during data acquisition showing a Langendorff‐perfused rabbit heart surrounded by three optical cameras (CAM A, B and C) positioned 120° apart, each coupled with high‐power LEDs for panoramic
Jimena Siles, Vinícius Silva, Tainan Neves, Italo Sandoval, Angélica Quadros, Giovanni Weber, Óscar Barquero, Ilija Uzelac, João Salinet   +8 more
wiley   +1 more source

Ivabradine (Procoralan) [PDF]

, 2008
peer reviewedIvabradine (Procoralan), a new If inhibitor which acts specifically and in a dose-dependent manner on the pacemaker activity of the sinoatrial node, is a pure heart rate lowering agent.
LANCELLOTTI, Patrizio
core