Complainant alleged that while attempting to cardiovert a patient (age & gender unknown), after removing the electrode pads, burns were found on the patient's skin and an spark was seen from the electrode pads.Complainant indicated that the patient subsequently sustained a burn.The customer was unable to provide information on the degree of the burn.
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The device was returned to zoll medical corporation and there was no indication of a device malfunction.The original electrodes were misplaced and were unavailable for testing.The part number for these pads did not have the lot number provided by the customer, built.(i.E.No lot number 1521b were built for pn 9600-0127).The device passed all testing including discharging, a defib cycle, bench handling, and defib impedance using test electrodes without duplicating the report.The logs were not saved and were unavailable for review.The device was recertified and returned to the customer.Burns and sparking are often caused when there is poor coupling between the patient and the applied defibrillation electrodes.Poor coupling can be caused by many factors including but not limited to: electrode placement and/or application (which can lead to excessive air trapped between the skin and gel), poor patient preparation, patient history, skin condition, old dry gel, etc.The cause of the poor coupling cannot be firmly established.Analysis of reports of this type has not identified an increase in trend.
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