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One 6f, duo-decapolar, large curl, livewire ep catheter was received for evaluation.Electrodes 1-2, 9-10, and 13-14 displayed acceptable resistance values; however, a short circuit was detected between electrode 1 and conductor wire 13.Dissection revealed that the flat wire insulation was torn and the insulation for conductor wire 13 was abraded in the same location, consistent with the short circuit detected and the reported noise.The device history record was reviewed to ensure that each manufacturing and inspection operation was performed.The cause of the short circuit is consistent with damage during use.
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