One bipolar pacing catheter with an attached monoject 1.3 cc volume limited syringe at gate valve were returned for examination.The reported event of pacing issue was confirmed.Continuity testing found that a short condition occurred in the catheter body.A cut down was performed and revealed that the insulation of both lead wires was missing between 13.6 cm and 14.3 cm from the catheter tip.This condition can allow both wires to make contact and cause a short condition.The balloon inflated clear and concentric and remained inflated for 5 minutes without leakage.No visible damage was observed from the catheter body, balloon, windings, and returned syringe.Since proper functioning of the pacing catheter depends on the electrical continuity of its electrodes and internal wires, care should be exercised when handling the catheter.Stretching, kinking, or forceful wiping of the catheter may result in damage.After stable pacing has been confirmed, the proximal end of the catheter should be secured to the insertion site to prevent undue movement that could result in tip dislodgment and loss of capture, or catheter migration.Care should be taken not to kink the catheter body when securing it.In this complaint, it could not be determined if procedural factors or device handling may have contributed to the reported event.An investigation has been initiated to consider any potential manufacturing factors that may have contributed to this complaint histories for all reported events are reviewed against trending control limits on a monthly basis, and any excursions above the control limits are assessed and documented as part of this monthly review.
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