Background The aim of the present study is to compare the clinical outcomes between left bundle branch area pacing (LBBaP) and right ventricular septal pacing (RVSP) in patients with percent ventricular pacing (VP%) ≥40%. Methods Fifty-four patients with VP% ≥40% were retrospectively studied, including 33 patients with LBBaP and 21 patients with RVSP. QRS duration (QRSd), interventricular mechanical delay (IVMD) and septal-posterior wall motion delay (SPWMD) were measured to evaluate ventricular synchrony. Heart failure hospitalization (HFH), pacing parameters, and complications were evaluated postoperatively and at follow-ups. Results The mean follow-up duration of the study participants was 13.80 ± 4.47 months. In the LBBaP group, no significant differences were noted in paced QRSd, IVMD and SPWMD of the LBBaP capture and intrinsic-conduction modes, but the paced QRSd was narrower (QRSd, 110.88 ± 7.37 vs 132.90 ± 14.78 ms, P< 0.0001) and the IVMD and SPWMD were lower when compared with the RVSP group (IVMD, 28.16 ± 4.76 vs 40.28 ± 6.97 ms, P <0.0001; SPWMD, 43.68 ± 26.41 vs 97.94 ± 12.77 ms, P <0.0001). LBBaP was associated with better left ventricular function in comparison with RVSP during follow-ups (LVEDD, 47.09 ± 4.47 vs 51.28 ± 7.58, P = 0.017; LVEF, 64.81± 5.49 vs 60.44 ± 9.28, P = 0.041). Patients with LBBaP had lower occurrences of HFH than patients with RVSP (3.13% vs 27.78%, P = 0.034). Pacing parameters showed no differences between the two groups and remained stable throughout the study period. Conclusion The results of this study suggest that LBBaP may be more suitable for patients requiring long-term high ventricular pacing ratio.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.