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It was reported that this subcutaneous implantable cardioverter defibrillator (s-icd) system delivered an inappropriate shock due to oversensing of noise.The patient reported feeling dizzy before the shock episode.It was noted the patient has a left ventricular assist device (lvad).Technical services (ts) reviewed device data and suspected the noise was non-physiological.Ts recommended troubleshooting options.The field representative confirmed no noise was reproducible with xyphoid palpitations, pocket manipulation, or isometrics.Ts suspected sense b noise.Ts discussed due to the lvad, secondary vector wasn't an option.Ts recommended other reprogramming options or replacing the entire system.However, ts discussed that sense b could occur again on a new system.The field representative stated they would discuss the options with electrophysiology (ep).It was noted the patient was also on the transplant list.Currently, this electrode remains in service.No adverse patient effects were reported.
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