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.It was noted that the patient experienced worsening heart failure related to the non-optimal pacing mode.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.The device software was later updated, and the device was reprogrammed back to an optimal pacing mode.No further patient complicationshave been reported as a result of this event.
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