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ICD Hardware Failure Associated with Multiple Internal Shocks
Author(s) -
NAIR LAWRENCE A.,
OSTROW ELIOT L.,
BECK BRYAN
Publication year - 2000
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.2000.tb00864.x
Subject(s) - medicine , backup , atrial flutter , generator (circuit theory) , cardiology , mechanical engineering , power (physics) , physics , quantum mechanics , ablation , engineering
The delivery of 37 shocks by an ICD within 20 minutes, in response to T wave oversensing during atrial flutter, resulted in several manifestations of undesirable device behavior. The generator reverted to backup mode, and disabled automatic capacitor reformation, therapy delivery, and automatic gain control. Postexplant analysis of the device revealed damage to the high voltage output section of the circuitry consistent with excessive electrical stress. In rare circumstances, multiple internal discharges can result in serious clinical anomalies in ICD behavior, and possibly in an increase in susceptibility to circuitry damage.