Figure 7: ECG Sequence of Leadless Dual-Chamber Pacing

Electrocardiogram (ECG) recorded during a dual-chamber test of the leadless pacemakers on the right atrium and right ventricle. The intrinsic heart rate was 98 beats/min. Dual-chamber pacing (D00) was performed at 120 beats/min and with 50 ms atrioventricular delay. The atrial (A) and ventricular (V) pacing spikes are indicated by the arrows.