1. Cardiac Conduction Velocity, Remodeling and Arrhythmogenesis.
- Author
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Han B, Trew ML, and Zgierski-Johnston CM
- Subjects
- Animals, Arrhythmias, Cardiac diagnostic imaging, Arrhythmias, Cardiac pathology, Electrocardiography, Electrodes, Gap Junctions metabolism, Heart Conduction System diagnostic imaging, Heart Conduction System pathology, Humans, Arrhythmias, Cardiac physiopathology, Heart Conduction System physiopathology, Ventricular Remodeling physiology
- Abstract
Cardiac electrophysiological disorders, in particular arrhythmias, are a key cause of morbidity and mortality throughout the world. There are two basic requirements for arrhythmogenesis: an underlying substrate and a trigger. Altered conduction velocity (CV) provides a key substrate for arrhythmogenesis, with slowed CV increasing the probability of re-entrant arrhythmias by reducing the length scale over which re-entry can occur. In this review, we examine methods to measure cardiac CV in vivo and ex vivo, discuss underlying determinants of CV, and address how pathological variations alter CV, potentially increasing arrhythmogenic risk. Finally, we will highlight future directions both for methodologies to measure CV and for possible treatments to restore normal CV.
- Published
- 2021
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