Extending multipoint pacing CRT battery longevity by swapping left ventricular pulse configurations.
Juan José García Guerrero1, Joaquín Fernández de la Concha Castañeda2, Antonio Chacón Piñero2
1Hospital Universitario de Badajoz, Av. de Elvas, s/n, 06080, Badajoz, Spain. juanjose.gargue@gmail.com.
Summary
Optimizing cardiac resynchronization therapy (CRT) with MultiPoint™ pacing (MPP) by configuring left ventricular (LV) pacing sites significantly reduces battery drain. This strategy leverages the LVCap™ Confirm algorithm to improve device longevity.
Area of Science:
- Cardiology
- Medical Devices
- Biomedical Engineering
Background:
- Cardiac resynchronization therapy (CRT) improves outcomes in heart failure patients.
- Left ventricular (LV) MultiPoint™ pacing (MPP) enhances CRT response by engaging multiple LV sites.
- MPP can reduce device battery longevity due to increased pacing demands.
Purpose of the Study:
- To evaluate the impact of optimizing LV pacing configurations on battery longevity in MPP-enabled CRT devices.
- To assess the effectiveness of the LVCap™ Confirm algorithm in mitigating battery longevity reduction with MPP.
Main Methods:
- Retrospective analysis of patients from the MORE-CRT MPP trial with MPP-enabled CRT-D devices.
- Device interrogation to compare electrical characteristics and estimated battery longevities across different MPP settings.
- Comparison of battery longevity with MPP Off, MPP enabled with maximal cathode separation, and MPP enabled with optimized cathode configuration.
Main Results:
- Enabling MPP with maximal LV cathode separation reduced battery longevity by 15%.
- Optimizing LV pacing configurations by swapping LV1/LV2 cathodes to leverage LVCap™ Confirm reduced longevity reduction to 9%.
- A mean battery longevity improvement of 7.7% was achieved through simple LV1/LV2 cathode configuration adjustments.
Conclusions:
- Properly configuring LV pacing sites to utilize device-based capture management algorithms significantly reduces the impact of MPP on battery longevity.
- Simple adjustments in LV pacing configurations can optimize device performance and longevity in CRT-D systems.
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