Sodium channel (dys)function and cardiac arrhythmias.

Abstract excerpt

Cardiac voltage-gated sodium channels are transmembrane proteins located in the cell membrane of cardiomyocytes. Influx of sodium ions through these ion channels is responsible for the initial fast upstroke of the cardiac action potential. This inward sodium current thus triggers the initiation and propagation of action potentials throughout the myocardium and consequently plays a central role in excitability of...

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