In response to the advisory describing the potential for device circuit error to occur while the device is processing an atrial-sensed event, the implantable pulse generator (ipg) was prophylactically reprogrammed.No device malfunction was observed while the device was in use, however, the device was functioning in a mode susceptible to circuit error and was therefore reprogrammed to preclude harm to the patient.Later, the ipg software was updated and the device was reprogrammed back to the original setting.After reprogramming it was noted that the patient was experiencing atrial fibrillation (af), worsening heart failure symptoms and was hospitalized.It was unknown if the symptoms were related to programming in response to the advisory.The device remains in use.No further patient complications have been reported as a result of this event.
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