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Timing and mid-term outcomes of using leadless pacemakers as replacement for infected cardiac implantable electronic devices

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Journal of Interventional Cardiac Electrophysiology Aims and scope Submit manuscript

Abstract

Background

Cardiac implantable electronic device (CIED) infections have a high morbidity and mortality and are an indication of device extraction. As a replacement, leadless pacemakers (LPs) may be preferable due to a low infection risk, but mid-term data on reinfections is lacking. Moreover, early LP reimplantation in pacemaker-dependent patients would circumvent the need for temporary pacemakers.

Methods

We included all patients with LP implantation as a replacement for an infected CIED, between January 2013 and December 2021. The occurrence of reinfection was assessed during standard follow-up visits.

Results

Twenty-nine patients (mean age 81 ± 9 years) were included, of which 21 (73%) had a pocket infection, 7 (24%) endocarditis, and 1 (3%) a systemic infection without endocarditis. All LP implantations were successful. LPs were implanted before extraction (n = 4, 13%), simultaneously with extraction (n = 5, 17%) and after extraction (n = 20, 70%). No reinfection occurred during the follow-up of median 32 months (IQR 13–66 months). Repeat blood cultures obtained in 9 (30%) patients and transthoracic echocardiography in all 7 patients with pacemaker endocarditis were negative for reinfection. In a subset of 6 LPs extracted during follow-up due to early battery depletion, prophylactically after the battery advisory or due to non-capture (median 36 months (range 0–67 months) post-implantation), histopathologic examination of tissues around the LPs showed no signs of infection.

Conclusions

After replacing infected CIEDs for an LP, no reinfections occurred in over 2.5 years follow-up. These results confirm that in case of CIED infection, the LP is an appealing replacement device. LP implantation before CIED extraction is feasible.

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Data availability

The data underlying this article will be shared on reasonable request to the corresponding author.

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Authors and Affiliations

Authors

Corresponding author

Correspondence to Karel T. N. Breeman.

Ethics declarations

Ethics approval

This study was approved by the Medical Ethical Committee of our hospital.

Consent to participate

All patients provided informed consent.

Conflict of interest

RK reports consultancy fees and research grants from Abbott, Boston Scientific, Medtronic, and Cairdac and has stock options from AtaCor Medical Inc. FT received consulting honoraria from Abbott and Boston Scientific. The other authors did not have conflicts of interest.

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What’s new?

• Leadless pacemakers (LPs) carry a very low infection risk and are therefore an appealing option in case of pacemaker infection. However, mid-term data on the recurrence of infections is lacking. Also, infected devices are usually replaced after extraction, but recent studies suggest that LPs can be safely implanted simultaneously to circumvent the use of temporary pacemakers and decrease hospitalization duration.

• In this study, LP implantations after, simultaneously with and even up to 4 days before extraction are reported. No reinfections were seen during more than 2.5 years follow-up.

• These results confirm that LPs are an attractive replacement option for infected pacemakers and suggest that LP implantation before extraction is feasible.

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Breeman, K.T.N., Beurskens, N.E.G., Driessen, A.H.G. et al. Timing and mid-term outcomes of using leadless pacemakers as replacement for infected cardiac implantable electronic devices. J Interv Card Electrophysiol 66, 1477–1485 (2023). https://doi.org/10.1007/s10840-022-01457-w

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  • DOI: https://doi.org/10.1007/s10840-022-01457-w

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