A micro-LED array based platform for spatio-temporal optogenetic control of various cardiac models
Scientific Reports, 2023 Optogenetics relies on dynamic spatial and temporal control of light to address emerging fundamental and therapeutic questions in cardiac research. In this work, a compact micro-LED array, consisting of 16 × 16 pixels, is incorporated in a widefield ...
Sebastian Junge +10 more
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INDICACIONES DE ESTIMULACIÓN ELÉCTRICA TRANSITORIA, COMPLICACIONES Y NECESIDAD DE ESTIMULACIÓN CARDÍACA PERMANENTE / Use of temporary cardiac pacing, its complications and need for permanent cardiac pacing [PDF]
CorSalud, 2013 Resumen: Introducción: La estimulación cardíaca temporal está indicada en diversas situaciones de extrema urgencia, en pacientes con bradiarritmias graves y bloqueos aurículo-ventriculares de II o III grados.Su indicación siempre se considera ante la ...
Humberto Ramos González +5 more
doaj
Review of data types and model dimensionality for cardiac DTI SMS-related artefact removal [PDF]
arXiv, 2022 As diffusion tensor imaging (DTI) gains popularity in cardiac imaging due to its unique ability to non-invasively assess the cardiac microstructure, deep learning-based Artificial Intelligence is becoming a crucial tool in mitigating some of its drawbacks, such as the long scan times.
arxiv
Termination of Reentry in an Inhomogeneous Ring of Model Cardiac Cells [PDF]
Phys Rev E 66, 061903 (2002), 2002 Reentrant waves propagating in a ring or annulus of excitable media model is the basic mechanism underlying a major class of irregular cardiac rhythms known as anatomical reentry. Such reentrant waves are terminated by rapid electrical stimulation (pacing) from an implantable device.
arxiv +1 more source
Brazilian Journal of Cardiovascular Surgery, 2011 INTRODUÇÃO: Distúrbios do sistema de condução cardíaco são complicações potenciais e conhecidas dos procedimentos de cirurgia cardíaca valvar. OBJETIVOS: Investigar a associação entre fatores peri-operatórios com bloqueio atrioventricular (BAV) e a ...
Andres Di Leoni Ferrari +7 more
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Pseudopacemaker syndrome and marked first-degree atrioventricular block: Case report [PDF]
Srpski Arhiv za Celokupno Lekarstvo, 2010 Introduction. Pacemaker syndrome consists of the symptoms and signs present in the single chamber (VVI) pacemaker patient with electrode placed in the right ventricular apex.
Panić Miloš +4 more
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Indeterminacy of Spatiotemporal Cardiac Alternans [PDF]
, 2007 Cardiac alternans, a beat-to-beat alternation in action potential duration (at the cellular level) or in ECG morphology (at the whole heart level), is a marker of ventricular fibrillation, a fatal heart rhythm that kills hundreds of thousands of people in the US each year.
arxiv +1 more source
Coupled dynamics of voltage and calcium in paced cardiac cells [PDF]
, 2004 We investigate numerically and analytically the coupled dynamics of transmembrane voltage and intracellular calcium cycling in paced cardiac cells using a detailed physiological model and its reduction to a three-dimensional discrete map. The results provide a theoretical framework to interpret various experimentally observed modes of instability ...
arxiv +1 more source
Dynamics of conduction blocks in a model of paced cardiac tissue [PDF]
, 2005 We study numerically the dynamics of conduction blocks using a detailed electrophysiological model. We find that this dynamics depends critically on the size of the paced region. Small pacing regions lead to stationary conduction blocks while larger pacing regions can lead to conduction blocks that travel periodically towards the pacing region. We show
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Novel direct approach for placement of permanent transvenous pacing leads after Fontan procedure
Annals of Pediatric Cardiology, 2018 The need for transvenous pacing (patients who have exhausted epicardial options) after a Fontan-type operation has been recognized. Many novel strategies have been proposed, but currently, all of them require additional maneuvers or rerouting of the ...
Jess T Randall +3 more
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