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. Author manuscript; available in PMC: 2024 Apr 1.
Published in final edited form as: J Cardiovasc Electrophysiol. 2023 Feb 14;34(4):984–993. doi: 10.1111/jce.15847

Figure 1. Effect of LV His-Purkinje conduction on response to pacing.

Figure 1

Bar chart of LVAT-95, LVDI, BIVAT-90 and BIVDI for three different pathologies: proximal LBBB but otherwise normal His-Purkinje system (blue), mild LV His-Purkinje conduction slowing (orange) and severe LV His-Purkinje system conduction slowing. The values are presented as mean ± standard deviation (black lines). LVAT-95 = 95% left ventricular activation time, LVDI = left ventricular dyssynchronous index, BIVAT-90 = 90% biventricular activation time, BIVDI = biventricular dyssynchronous index, LBBB = left bundle branch block, CRT = cardiac resynchronization therapy, S-HBP = selective His bundle pacing, S-LBBP optAVD = selective left bundle pacing with optimized atrioventricular delay, HOT-CRT = His optimized CRT, LOT-CRT = left bundle optimized CRT