The reported event was confirmed as use-related.Using the multi-meter t-656 and the test box t-657, the resistance was measured for both distal and proximal end of the returned electrode sample.There was no inter-circuit resistance for the distal end of the electrode, and the resistance at the proximal end of the electrode was 1.6 ohms.Therefore, the product failed to meet specifications.The sample was dissected and it was found that the distal tail had been damaged, as seen in gfo evaluation pic attached in the sample evaluation attachments.It appears that the distal leg may have been pulled or stretch causing the damage to the distal wire.The root cause of the reported event is user error in not following the precautions and mishandling the device, resulting in failure to maintain pacing function and requiring replacement of device.The device history record was reviewed and found nothing that could have caused or contributed to the reported event.The instructions for use were found adequate and state the following: "this device should be used only by or under the supervision of physicians trained in the techniques of transvenous intracardiac studies and temporary pacing." "excessive bending, torqueing, or kinking of the electrode catheter may cause damage to the catheter including damage to internal wires.".
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