Extending multipoint pacing CRT battery longevity by swapping left ventricular pulse configurations.

Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing
Juan José García GuerreroKyungmoo Ryu

Abstract

Cardiac resynchronization therapy (CRT) with left ventricular (LV) MultiPoint™ pacing (MPP) has been shown to improve CRT response by pacing two LV sites (LV1, LV2). While an additional LV pacing site reduces battery longevity, this cost can be minimized by leveraging an existing device-based capture management algorithm (LVCap™ Confirm). The purpose of this study was to evaluate the MPP battery longevity improvement achieved by configuring LV pacing sites to properly leverage LVCap Confirm. Patients previously enrolled in the MORE-CRT MPP trial with existing MPP-enabled CRT-D devices (Abbott Quadra Assura MP™ CD3371-40QC, Quartet™ LV lead) underwent device interrogation. Device electrical characteristics and estimated battery longevities were compared for various MPP settings. At 2.1 ± 1.1 years post-implant, the estimated remaining battery longevity in 65 patients was 70 ± 14 months with MPP Off (LV pacing from minimum capture threshold). Enabling MPP with maximal anatomical separation between LV1 and LV2 cathodes reduced longevity by 15 ± 14%. However, swapping the LV1 and LV2 cathodes, such that the LV1 threshold was the higher of the two, allowed the device to take full advantage of the LVCap™ Confirm capture management al...Continue Reading

References

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Citations

Jul 14, 2021·Pacing and Clinical Electrophysiology : PACE·Pedro MarquesJoão de Sousa
Aug 12, 2021·Journal of Cardiovascular Electrophysiology·Vishal S MehtaChristopher A Rinaldi

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