Results 1 to 10 of about 98,015 (277)
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.
Christini, David J., Sinha, Sitabhra
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Indeterminacy of Spatiotemporal Cardiac Alternans [PDF]
, 2008 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 ...
A. H. Nayfeh +11 more
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The Annals of Thoracic Surgery, 1979 The basic electrophysiology of temporary and permanent cardiac pacing is reviewed, as are the indications, the types of pacing systems, and the methods of implantation. Recent developments in power sources and leads are described. The mercury-zinc battery is now obsolete and is being replaced by lithium, rechargeable, and isotopic power systems.
Nicholas P.D. Smyth
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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.
C. H. Luo +7 more
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An intracardiac electrogram model to bridge virtual hearts and implantable cardiac devices [PDF]
arXiv, 2017 Virtual heart models have been proposed to enhance the safety of implantable cardiac devices through closed loop validation. To communicate with a virtual heart, devices have been driven by cardiac signals at specific sites.
Ai, Weiwei +5 more
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Rate-dependent propagation of cardiac action potentials in a one-dimensional fiber [PDF]
, 2004 Action potential duration (APD) restitution, which relates APD to the preceding diastolic interval (DI), is a useful tool for predicting the onset of abnormal cardiac rhythms.
C. L. Gibbs +11 more
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Cells, 2022 Congenital long QT syndrome is a type of inherited cardiovascular disorder characterized by prolonged QT interval. Patient often suffer from syncopal episodes, electrocardiographic abnormalities and life-threatening arrhythmia.
Feifei Wang +15 more
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Avoiding unnecessary ventricular pacing is associated with reduced incidence of heart failure hospitalizations and persistent atrial fibrillation in pacemaker patients [PDF]
, 2023 Aims In bradycardia patients treated with dual-chamber pacing, we aimed to evaluate whether pacing with atrioventricular (AV) delay management [AV hysteresis (AVH)], compared with standard pacing with fixed AV delays, reduces unnecessary ventricular ...
Arnold M. +11 more
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Enhancing respiratory sinus arrhythmia increases cardiac output in rats with left ventricular dysfunction [PDF]
, 2020 Key points: Respiratory sinus arrhythmia is physiological pacing of the heart that disappears in cardiovascular disease and is associated with poor cardiac prognosis. In heart failure, cardiac pacing has little, if any, variation in rate at rest.
Chauhan, Ashok +7 more
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Understanding Pacing-Induced Cardiomyopathy: a mini review [PDF]
, 2021 Patients with total atrioventricular block or sinus node dysfunction will need pacemaker implantation to improve the physiologic function of the heart.
Purwowiyoto, Sidhi Laksono +2 more
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