Results 21 to 30 of about 89,200 (256)

Restoring heart function and electrical integrity: closing the circuit

open access: yesnpj Regenerative Medicine, 2017
Cardiovascular diseases are the main cause of death in the world and are often associated with the occurrence of arrhythmias due to disruption of myocardial electrical integrity.
Luís Miguel Monteiro   +4 more
doaj   +1 more source

Anatomic-electrophysiological correlations concerning the pathways for atrioventricular conduction. [PDF]

open access: yes, 2001
The remarkable success of radiofrequency ablation in recent decades in curing atrioventricular nodal reentrant tachycardias has intensified efforts to provide a solid theoretical basis for understanding the mechanisms of atrioventricular transmission ...
Anderson, RH, Ho, SY, Mazgalev, TN
core   +1 more source

Erbb2 is required for cardiac atrial electrical activity during development.

open access: yesPLoS ONE, 2014
The heart is the first organ required to function during embryonic development and is absolutely necessary for embryo survival. Cardiac activity is dependent on both the sinoatrial node (SAN), which is the pacemaker of heart's electrical activity, and ...
Gennadiy Tenin   +7 more
doaj   +1 more source

Syncytium calcium signaling and macrophage function in the heart

open access: yesCell & Bioscience, 2018
Macrophages are traditionally viewed as a key component of the immunity defense system. Recent studies have identified resident macrophages in multiple organs including the heart, in which the cells perform their crucial role on tissue repair after ...
Xin Zhou   +12 more
doaj   +1 more source

Nonlinear physics of electrical wave propagation in the heart: a review [PDF]

open access: yes, 2016
The beating of the heart is a synchronized contraction of muscle cells (myocytes) that are triggered by a periodic sequence of electrical waves (action potentials) originating in the sino-atrial node and propagating over the atria and the ventricles ...
Alonso Muñoz, Sergio   +2 more
core   +2 more sources

Identifying the evolutionary building blocks of the cardiac conduction system.

open access: yesPLoS ONE, 2012
The endothermic state of mammals and birds requires high heart rates to accommodate the high rates of oxygen consumption. These high heart rates are driven by very similar conduction systems consisting of an atrioventricular node that slows the ...
Bjarke Jensen   +7 more
doaj   +1 more source

Early experience with permanent pacemaker implantation at a tertiary hospital in Nigeria

open access: yesThe Pan African Medical Journal, 2020
INTRODUCTION: Artificial pacemakers generate electrical impulses and regulate the heart´s conduction system. They are often used to treat individuals with bradycardia. Permanent pacemaker implantation is a lifesaving procedure especially in patients with
Uvie Ufuoma Onakpoya   +4 more
doaj   +1 more source

Predictive factors of atrioventricular conduction disorders [PDF]

open access: yesRomanian Medical Journal
Atrioventricular conduction disorders represent an alteration in the normal function of the heart’s electrical conduction system, a system that connects the atria and ventricles through the atrio-ventricular node and the His-Purkinje system. Consequently,
Carmen Marina Deutsch   +2 more
doaj   +1 more source

Modeling the Heart as a Communication System [PDF]

open access: yes, 2014
Electrical communication between cardiomyocytes can be perturbed during arrhythmia, but these perturbations are not captured by conventional electrocardiographic metrics.
Aguilar-Rodríguez, José   +7 more
core   +2 more sources

The effects of repetitive electric cardiac stimulation in dogs with normal hearts, complete heart block and experimental cardiac arrest [PDF]

open access: yes, 1955
Direct cardiac stimulation was conducted in the open chest. In normal animals, auricular stimulation at frequencies faster than the spontaneous rate caused little change in vascular pressures or cardiac output.
GAERTNER, RA, STARZL, TE, WEBB, RC
core   +1 more source

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