It is well known that there is considerable spatial inhomogeneity in the electrical properties
of heart muscle, and that the many interventions that increase this initial degree of
inhomogeneity all make it easier to induce certain cardiac arrhythmias. We consider here
the specific example of myocardial ischemia, which greatly increases the electrical
heterogeneity of ventricular tissue, and often triggers life-threatening cardiac arrhythmias
such as ventricular tachycardia and ventricular fibrillation. There is growing evidence that …