Battery Longevity in Modern Implantable Cardioverter-Defibrillators and Cardiac Resynchronization...

Area of Science:

• Cardiology
• Biomedical Engineering
• Medical Devices

Background:

• Battery longevity in high-voltage devices (HVDs) is crucial for patient outcomes and reducing healthcare costs.
• Variability in battery performance exists among major manufacturers of implantable cardioverter-defibrillators (ICDs) and cardiac resynchronization therapy-defibrillators (CRT-Ds).
• This study evaluates battery longevity and influencing factors in HVDs implanted at a single institution.

Purpose of the Study:

• To compare battery longevity across major manufacturers of ICDs and CRT-Ds.
• To identify factors affecting battery depletion in these high-voltage devices.
• To inform device selection for improved patient outcomes and cost-effectiveness.

Main Methods:

• Retrospective analysis of 353 patients implanted with HVDs (Abbott, Boston Scientific, Medtronic) between 2012-2021.
• Kaplan-Meier curves and Cox proportional hazards models analyzed device longevity, with battery depletion as the primary endpoint.
• Multivariate analysis adjusted for potential confounding factors.

Main Results:

• Boston Scientific devices demonstrated significantly longer battery life compared to Abbott and Medtronic (p < 0.001).
• Six-year replacement-free survival was 99% for ICDs and 93% for CRT-Ds.
• Device manufacturer, type (ICD vs. CRT-D), and ventricular pacing rate independently predicted battery depletion (p < 0.001).

Conclusions:

• Significant differences in battery longevity exist among HVD manufacturers, impacting device selection.
• Longer battery life can decrease replacement frequency, potentially improving patient outcomes and cost-effectiveness.
• Manufacturer choice is a key consideration for optimizing HVD performance and patient care.