Related manufacturing reference number: 2017865-2024-33190, related manufacturing reference number: 2017865-2024-33191.It was reported that the left ventricular lead exhibited loss of capture.Dislodgement was confirmed via x-ray.The physician decided to revise the lead.When the physician attempted to reposition the lead, it was noted the guidewire was unable to advance through the lead.The lead was explanted and replaced.When the new lead was plugged into the chronic implantable cardioverter defibrillator (icd), it was noted there was loss of capture, high pacing impedance, and the set screw had stripped.The icd was removed and replaced.When the new icd was implanted, it was noted the set screw on the right ventricular header could not be removed.The icd was removed and replaced successfully.The patient was stable.
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The reported events were lead dislodgement, failure to advance guidewire, and failure to capture.Final analysis found a complete lead was returned in one piece.The s-curve height was measured within specification.The reported event of failure to advance guidewire was confirmed.The guidewire could not be inserted beyond the middle region.Dissection of the lead found blood inside the inner coil.The reported event of failure to capture was not confirmed.Electrical testing did not find any indication of conductor fractures or internal shorts.The cause of failure to advance guidewire was due to blood inside the inner coil.
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