Key result
A 57-year-old man experienced 60 inappropriate defibrillation shocks and 353 antitachycardia pacings over 13 days due to displacement of the defibrillator lead into the superior vena cava.
Case Report (n=1)
This case highlights the potential for a massive number of inappropriate ICD shocks due to lead displacement and 'lead rubbing' in the superior vena cava, emphasizing the need for careful electrogram analysis to differentiate noise sources.
Prompts consideration of lead displacement in unexplained device noise; case report leaves open prevalence and optimal diagnostic criteria.
BACKgROunD: Implantable cardioverter-defibrillators (ICDs) are active cardiac implants for immediate treatment of ventricular arrhythmias. They provide life-saving therapy, but may also deliver inappropriate therapy.
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Korpas et al. (2016) conducted a case report in Sustained ventricular fibrillations (n=1). Implantable cardioverter-defibrillator (ICD) was evaluated on Inappropriate ICD shocks. A 57-year-old man experienced 60 inappropriate defibrillation shocks and 353 antitachycardia pacings over 13 days due to displacement of the defibrillator lead into the superior vena cava.
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