Transient out-of-range impedance in "hybrid" implantable cardioverter-defibrilator system: A case series

Michał Orszulak; Witold Orszulak; Dagmara Urbańczyk-Swić; Artur Filipecki; Wojciech Kwaśniewski; Katarzyna Mizia-Stec

doi:10.1111/pace.14401

Transient out-of-range impedance in "hybrid" implantable cardioverter-defibrilator system: A case series

Pacing Clin Electrophysiol. 2022 Feb;45(2):270-273. doi: 10.1111/pace.14401. Epub 2021 Dec 10.

Authors

Michał Orszulak¹, Witold Orszulak¹, Dagmara Urbańczyk-Swić¹, Artur Filipecki¹, Wojciech Kwaśniewski¹, Katarzyna Mizia-Stec¹

Affiliation

¹ First Department of Cardiology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland.

PMID: 34743332
DOI: 10.1111/pace.14401

Abstract

A retrospective analysis of 60 patients with hybrid implantable cardioverter-defibrilator (ICD) systems: Boston Scientific device paired with non-Boston leads. In 10 (17%) patients transient, out-of-range peaks of ventricular pace impedance trend were observed. Probable cause is header-lead interaction incompatibility. This matter is known mainly for pacemakers systems but not for ICDs. Investigation this issue is crucial because consequences in ICD systems are unpredictable and risk might be higher than in pacing systems.

Keywords: ICD; Lead failure; header-lead interaction; hybrid CIED system; pacing impedance.

MeSH terms

Aged
Defibrillators, Implantable*
Diagnosis, Differential
Electric Impedance
Equipment Failure Analysis*
Female
Humans
Male
Prosthesis Design
Retrospective Studies