Multipoint Left Ventricular Pacing as Alternative Approach in Cases of Biventricular Pacing Failure

Area of Science:

• Cardiology
• Biomedical Engineering

Background:

• Cardiac resynchronization therapy (CRT) is a key treatment for heart failure with reduced ejection fraction and dyssynchrony.
• A significant challenge in CRT is the phenomenon of patient non-response to standard biventricular pacing (BiVP).
• Factors contributing to non-response include capture issues, suboptimal pacing percentages, and incorrect delay optimization.

Purpose of the Study:

• To review alternative CRT modalities for patients who do not respond to BiVP.
• To evaluate the advantages and disadvantages of novel pacing strategies.
• To propose a pathophysiology and simulation-based approach for optimizing CRT in non-responders.

Main Methods:

• Review of recent evidence on alternative CRT techniques.
• Analysis of His or left bundle branch pacing strategies.
• Evaluation of multipoint left ventricular pacing and His/left bundle branch-optimized CRT.

Main Results:

• Alternative pacing methods offer potential solutions for CRT non-responders.
• His/left bundle branch pacing and multipoint pacing present distinct benefits and drawbacks.
• Combining pacing techniques may yield optimized CRT outcomes.

Conclusions:

• Novel pacing strategies are emerging to address CRT non-response.
• A tailored, pathophysiology-informed approach is needed to select the best CRT strategy for individual non-responders.
• Further research and simulation are crucial for guiding CRT optimization in challenging cases.