It was reported that the patient presented in clinic due to phrenic nerve stimulation.It was noted that the left ventricular (lv) lead was dislodged, causing the phrenic nerve stimulation as well as high capture thresholds.The dislodgement was discovered via a chest x-ray.While repositioning the lv lead, the physician found it difficult to insert the guidewire due to the presence of blood in lv lead.Ultimately, the physician elected to explant and replace the lv lead.The patient was stable throughout the procedure.
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The reported events were lead dislodgement, high capture threshold, extra cardiac stimulation, and difficulties inserting the guidewire in the lead due to the presence of blood in the lead.As received, as complete lead was returned in one piece.The reported event of difficulties inserting the guidewire in the lead due to the presence of blood in the lead was confirmed.Visual inspection of the lead found blood inside the lead.X-ray examination found damaged inner coil consistent with procedural damage.Unable to perform guidewire insertion test due to damaged inner coil inside, as received.The cause of the reported event of difficulties inserting the guidewire in the lead due to the presence of blood in the lead was due to the inner coil being damaged and blood inside the lead.The reported event of high capture threshold was not confirmed.Analysis was normal.No anomalies were found.A device history record (dhr) review was performed and all required manufacturing processes and inspections steps were confirmed to be completed per the requirements.The device met specifications prior to leaving abbott manufacturing facilities.
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