|
The device remains in situ and therefore has not been returned for evaluation.Three unsuccessful requests to obtain medical imaging were made.The work order: (b)(4) was reviewed and appears complete and correct.The device ifu states: "potential adverse events that may occur and/or require intervention include, but are not limited to: endoleak"."the long-term performance of fenestrated endovascular grafts, including the stents placed in fenestrations/scallops, has not yet been established.All patients should be advised that endovascular treatment requires life-long, regular follow-up to assess their health and the performance of their endovascular graft.Patients with specific clinical findings (e.G., endoleaks, enlarging aneurysms, changes in the structure or position of the endovascular graft, or stenosis/occlusion of vessels accommodated by fenestrations) should receive enhanced follow-up." "after endovascular graft placement, patients should be regularly monitored for perigraft flow, aneurysm growth, patency of vessels accommodated by a fenestration/scallop, or changes in the structure or position of the endovascular graft.At a minimum, annual imaging is recommended, including: 1) abdominal radiographs to examine device integrity (separation between components, stent fracture or barb separation) and 2) contrast and non-contrast ct to examine aneurysm changes, perigraft flow, patency, tortuosity and progressive disease.If renal complications or other factors preclude the use of image contrast media, abdominal radiographs and duplex ultrasound may provide similar information." based on the information provided, the root cause is unknown.It is possible that the separation was due to: insufficient fixation (friction) between the proximal and distal components inadequate retention forces distal device separation patient-related factors.The degree of anterior ¿bowing¿ of the graft between the initial procedure and the event reported.
|