Abstract
Purpose
The leadless pacemaker (LP) is a promising new technology in pacing therapy that avoids a generator pocket and transvenous lead-related complications. However, extraction experience with simultaneous re-implant of a leadless device remains limited. We sought to study the outcomes of Nanostim LP retrieval and simultaneous reimplantation of Micra LP.
Methods
Patients undergoing retrieval of the Nanostim LP and receiving a Micra LP implant between 2016 and 2018 at Mayo Clinic (Rochester, MN) were studied. The procedural and outcome data were collected from the electronic medical record.
Results
Nine patients underwent attempted Nanostim LP retrieval and 6 of these simultaneously received a Micra LP reimplant. All retrievals were considered chronic due to implant durations of > 1 year. Extraction procedures were completed with a success rate of 89% and simultaneous reimplantations were performed successfully in all cases with no major complications. Newly implanted Micra LP device function was normal at follow-up. Factors such as duration of device implant and device positioning appeared to impact ease of extraction.
Conclusions
Retrieval of the Nanostim LP system and simultaneous replacement with an alternate Micra leadless device appears to be a feasible approach.
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Abbreviations
- LP:
-
Leadless pacemaker
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ESM 1
Cine from patient #9 demonstrating Nanostim device present in the right ventricle. An EPT ablation catheter advanced through the retrieval catheter snare is present in the right ventricle. The retrieval catheter is being advanced to the right ventricle, using the EPT catheter as a rail. (MOV 1659 kb)
ESM 2
Docking button detachment noted after Nanostim device snared. (MOV 706 kb)
ESM 3
Capture of the Nanostim docking button using suction applied to a multipurpose angiography catheter advanced through a deflectable Agilis sheath. (MOV 4557 kb)
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Asirvatham, R.S., Vaidya, V.R., Thome, T.M. et al. Nanostim leadless pacemaker retrieval and simultaneous micra leadless pacemaker replacement: a single-center experience. J Interv Card Electrophysiol 57, 125–131 (2020). https://doi.org/10.1007/s10840-019-00647-3
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DOI: https://doi.org/10.1007/s10840-019-00647-3