Figure 3.

Results of CCM on myocardial electrophysiological characteristics.

(a) Comparison of the QTc interval before CCM among the three groups. (b) Comparison of the QTc interval after CCM among the three groups. (c) Comparison of ventricular ERP among the three groups. (d) VT inducibility in the sham group, HF group, and CCM group. *P < 0.05 vs. the sham group (n = 5); ^#P < 0.05 vs. the HF group (n = 5).

CCM, cardiac contractility modulation; QTc, corrected QT interval; HF, heart failure; ERP, effective refractory period; VT, ventricular tachycardia.