Click on image to view larger version.

Figure 1 Incidence of spontaneous ventricular arrhythmias in susceptible (A) and resistant (B) dogs as ischemic heart failure progressed over time (p = 0.001 susceptible vs. resistant SCD). Baseline arrhythmia incidence was when the left ventricular ejection fraction reached the target range (35%, see text). 0 = no arrhythmias; PVC = premature ventricular contraction; SCD = sudden cardiac death; VTns = nonsustained ventricular tachycardia (<20 beats); VTs = sustained ventricular tachycardia (>20 beats).