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Chinese Journal of Clinicians(Electronic Edition) ›› 2025, Vol. 19 ›› Issue (01): 8-13. doi: 10.3877/cma.j.issn.1674-0785.2025.01.002

• Clinical Research • Previous Articles    

Impact of left bundle branch pacing versus right ventricular pacing on tricuspid regurgitation

Ning Wang1, Yan Li1, Xuezhi Chen1,()   

  1. 1. Department of Cardiology, Peking University International Hospital,Beijing 102206, China
  • Received:2025-01-13 Online:2025-01-15 Published:2025-04-08
  • Contact: Xuezhi Chen

Abstract:

Objective

To compare the effect of left bundle branch pacing versus right ventricular pacing on tricuspid regurgitation.

Methods

This study included 93 patients who underwent pacemaker implantation at Peking University International Hospital from 2018 to 2023. The patients were divided into a left bundle branch pacing group (45 cases) and a right ventricular pacing group (48 cases).Tricuspid regurgitation severity, cardiac structural parameters, and cardiac function were assessed using echocardiography, and preoperative and postoperative differences were compared between the two groups.

Results

There was no significant difference in tricuspid regurgitation between the left bundle branch pacing group and right ventricular pacing group both before and after implantation (P=0.27, P=0.55).Subsequently, subgroup analyses were performed based on the presence of atrial fibrillation and moderate to severe tricuspid regurgitation before implantation. In the atrial fibrillation subgroup, tricuspid regurgitation significantly improved after left bundle branch pacing (P=0.02), while there was no significant improvement in the right ventricular pacing group. In the subgroup with moderate to severe tricuspid regurgitation, the grade of tricuspid regurgitation significantly improved after left bundle branch pacing (P<0.01), and the velocity of tricuspid regurgitation also showed improvement (P=0.04); however, no significant differences were observed in the right ventricular pacing group.

Conclusion

Left bundle branch pacing may have potential advantages in reducing tricuspid regurgitation. Compared to right ventricular pacing, left bundle branch pacing significantly alleviates tricuspid regurgitation in patients with atrial fibrillation and pre-existing moderate to severe tricuspid regurgitation.

Key words: Left bundle branch pacing, Right ventricular pacing, Tricuspid regurgitation, Echocardiography

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