It was reported that this cardiac resynchronization therapy defibrillator (crt-d) and non boston scientific left ventricular (lv) lead exhibited noise and oversensing resulting in an atrial tachy response (atr) episode.Technical services (ts) noted this was possibly due to electrocautery during implant.The lv thresholds were noted to be high.It was found that the patients daily measurements and timestamps were incorrect due to a programmer battery issue.The field representative corrected the issue with a programmer and the device and lead remain in service.Later, there was noise that appeared to be externally sourced and oversensing which resulted in greater than two seconds of pacing inhibition.No adverse patient effects were reported.
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