Cellular mechanism for ischemic ventricular arrhythmias.

Annu Rev Med · 1990

basic_science · Level V

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Abstract

Two of the major ionic abnormalities found early in ischemia are (a) loss of potassium with an increase in the extracellular potassium ion concentration and (b) an increase in free cytosolic calcium. Both of these ionic abnormalities can powerfully predispose to the development of arrhythmias.