Subcutaneous ICD shock lead looping in the device pocket caused lead dislodgement due to loop release 50 days after implantation in a 13-year-old patient with congenital long QT syndrome.
Case Report (n=1)
No
Highlights a specific mechanical complication (lead dislodgement due to loop release) of subcutaneous ICD placement in pediatric patients.
Absolute Event Rate: 1% vs 0%
Implantable cardioverter-defibrillators (ICDs) are increasingly used in pediatric patients for both primary and secondary prevention of sudden cardiac death. In this population, ICD management requires consideration of small body size, growth-related changes, and disease-specific characteristics. In infants and young children, conventional transvenous lead placement for ICD implantation is often challenging because of the small vascular caliber, and alternative strategies—such as positioning shock leads in subcutaneous or epicardial locations—are employed on a case-by-case basis.
Kato et al. (2026) conducted a case report in Pediatric patient with congenital long QT syndrome and implanted subcutaneous ICD lead (n=1). Subcutaneous implantable cardioverter-defibrillator (ICD) shock lead replacement with loop formation in device pocket was evaluated on Lead dislodgement due to loop release in the device pocket. Subcutaneous ICD shock lead looping in the device pocket caused lead dislodgement due to loop release 50 days after implantation in a 13-year-old patient with congenital long QT syndrome.
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