Fig. 2

Spontaneous premature ventricular complex (PVCs) and electrophysiology in the Sham, MI and MI + PC6 groups. A Summary of PVCs in the Sham, MI and MI + PC6 groups. Each column indicates the onset of PVCs in each mouse. The red column represents the occurrence of a PVC every 30 s. B Representative normal electrocardiogram recordings in the Sham (upper panel) and MI + PC6 (bottom panel) groups. Typical traces of PVCs in the MI group (middle panel). C–J Summary of the electrophysiology, including the heart rate, PR interval, QRS width, QTc, Q amplitude, R amplitude, and S amplitude and T amplitude in the Sham, MI and MI + PC6 groups. *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001