Key result
LBBAP achieves up to ~98% implantation success for CRT in heart failure patients.
Why the study?
LBBaP is not suitable for all heart failure patients needing CRT, and success rates are lower due to factors like myocardial fibrosis, IVCD, and right heart enlargement.
What are the success rates, challenges, and troubleshooting strategies for left bundle branch area pacing (LBBaP) as a cardiac resynchronization therapy in heart failure patients?
What are the success rates, challenges, and troubleshooting strategies for left bundle branch area pacing (LBBaP) as a cardiac resynchronization therapy in heart failure patients?
This review highlights the potential of LBBaP as an alternative to BiV-CRT while outlining specific anatomical and pathological challenges that reduce its success rate in certain heart failure populations.
May support LBBaP consideration where BiV-CRT is unsuitable; leaves open need for RCTs to confirm long-term outcomes.
Cardiac resynchronization therapy (CRT) is an important treatment of heart failure patients with reduced left ventricular ejection fraction (LVEF) and asynchrony of cardiac electromechanical activity. Left bundle branch area pacing (LBBaP) is a novel physiological pacing modality that appears to be an effective method for CRT. LBBaP has several advantages over the traditional biventricular-CRT (BiV-CRT), including a low and stable pacing capture threshold, a high success rate of implantation, a short learning curve, and high economic feasibility. However, LBBaP is not suitable for all heart failure patients needing a CRT and the success rates of LBBaP in heart failure patients is lower because of myocardial fibrosis, non-specific intraventricular conduction disturbance (IVCD), enlargement of the right atrium or right ventricle, etc. In this literature review, we summarize the success rates, challenges, and troubleshooting of LBBaP in heart failure patients needing a CRT.
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Zhang et al. (2023) conducted a review in Heart failure with reduced LVEF and asynchrony (n=498). Left bundle branch area pacing (LBBaP) vs. Biventricular-CRT (BiV-CRT) or His bundle pacing (HBP) was evaluated on Implantation success rate. Left bundle branch area pacing is an effective method for cardiac resynchronization therapy in heart failure patients, demonstrating high implantation success rates ranging from 81.1% to 98.1%.
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