As reported through the (b)(6) tavi registry, a 23mm sapien 3 valve was transfemorally deployed in the aortic annulus.Right after tavr, the patient developed left femoral artery thromboembolism and occlusion was observed.Blood flow was restored by thrombus aspiration and balloon angioplasty.As per follow up, since there was no resistance during sheath insertion and removing, it is thought that tortuosity may have been contributed to the event.The outcome was determined as recovered.
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Per the instructions for use (ifu), thrombosis and embolization of air, calcification or thrombus are potential adverse events associated with transcatheter aortic valve replacement and bioprosthetic heart valves.According to the mayo clinic, some causes for thromboembolism not associated with invasive procedures include advanced age, atherosclerosis, cancer, previous mi, heart failure, dm, htn, a sedentary lifestyle, certain medications, and smoking.It is the natural tendency of the body to form a clot on foreign objects in the vascular space.These patients are anticoagulated for the procedure and interventional best practices mandate meticulous wiping and flushing of the devices to prevent and/or remove the clot.The thv training manuals and ifu instruct the operator to administer heparin and maintain the act at = 250 sec.In this case, there was no allegation or indication a device malfunction contributed to this adverse event.The exact cause of the reported event was unable to be determined but may have been due to procedural factors and or patient factors not provided.A review of edwards lifesciences risk management documentation was performed for this case.The reported event is an anticipated risk of the transcatheter heart valve procedure, additional assessment of this adverse event is not required at this time.The ifu and training manuals have been reviewed and no inadequacies have been identified with regards to warnings, contraindications, and the directions/conditions for the successful use of the device.Complaint histories for all reported events are reviewed against trending control limits monthly, and any excursions above the control limits are assessed and documented as part of this monthly review.No corrective or preventative actions are required.
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