[4494]
Icu patient developed ventricular tachycardia, required defibrillation. After the fourth defibrillation, the ekg tracing disappeared from the screen. The defibrillator was immediately plugged into the nearest electrical outlet and exhibited a delay in re-charging. The patient required no further defibrillation. The defibrillator was removed from patient use. Bioengineering's evaluation revealed a battery pack failure as the direct cause of the delay in re-charging. The patient subsequently expireddevice not labeled for single use. Patient medical status prior to event:  critical condition. There was not multiple patient involvement. Device serviced in accordance with service schedule. Date last serviced:  01-may-93. Service provided by:  user facility biomedical/bioengineering department. Service records available. Invalid data - regarding whether event presents imminent hazard. Device used as labeled/intended. Device was evaluated after the event. Method of evaluation:  actual device involved in incident was evaluated, electrical tests performed, performance tests performed. Results of evaluation:  component failure, battery/pack. Conclusion:  device failure directly caused event. Certainty of device as cause of or contributor to event:  invalid data. Corrective actions:  device temporarily removed from service. The device was not destroyed/disposed of.
 Patient Sequence No: 1, Text Type: D, B5