Case Report of Novel, Automatic Shocking Vector Adjustment Algorithm: A Life-Saving Feature of a Modern Defibrillator

Failed delivery of appropriate shocks against fatal dysrhythmias can be the result of low impedance on high-voltage leads. This malfunction might be missed on routine interrogation. We describe the case of a 66-year-old man with a high-voltage lead short circuit who was successfully rescued with the...

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Bibliographic Details
Published in:Permanente journal 2022-04, Vol.26 (1), p.119-122
Main Authors: Heckle, Mark R, Jha, Sunil K
Format: Article
Language:English
Subjects:
Aged
Algorithms
Arrhythmias, Cardiac - therapy
Case Reports
Defibrillators, Implantable
Electric Countershock
Humans
Male
Vena Cava, Superior
Ventricular Fibrillation - therapy
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Summary:Failed delivery of appropriate shocks against fatal dysrhythmias can be the result of low impedance on high-voltage leads. This malfunction might be missed on routine interrogation. We describe the case of a 66-year-old man with a high-voltage lead short circuit who was successfully rescued with the use of an overcurrent detection and automatic shocking vector adjustment algorithm. A 66-year-old man with severe nonischemic cardiomyopathy was admitted after receiving 2 shocks from his cardiac resynchronization therapy cardioverter-defibrillator. Interrogation of his defibrillator confirmed 2 consecutive episodes of ventricular fibrillation. For each episode, the initial shock therapy was aborted due to low impedance (
ISSN:1552-5775
1552-5767
1552-5775
DOI:10.7812/TPP/21.007