*** for p < 0.001
Figure 7: UHF-ECG ventricular depolarization patterns change based on specific pacing locations in the right ventricular septum with conduction system engagement. Please note the minimal difference in QRS morphology between cSp and nsHB capture, despite the UHF-ECG depolarization pattern being significantly different and the fact that the HV interval in the c-Sp location was 40 ms indicating the lead tip being positioned still on the His bundle.