The device remains implanted in the patient.Due to the unavailability of the complaint device, engineering was unable to perform any visual inspection, functional testing, or dimensional analysis.The reported events were confirmed based on the medical record.A review of the dhr, lot history, and complaint history did not provide any indication that a manufacturing non-conformance would have hypoattenuated leaflet thickening (halt) may be caused by several patient-related factors including early valve deterioration (svd) (e.G.Stenosis calcification), non structural dysfunction (e.G.Pannus), or thrombosis.In this case, it was reported that there was possible clot under the leaflet and that the patient had diabetes and hypercholesterolemia.Valve thrombosis is the formation of significant blood clots forming on the valve.These clots could significantly impact the functionality of the valve resulting in leaflet thickening.Diabetes is a known factor that may increase the risk of valve calcification leading to early valve degeneration stenosis.Hypercholesterolemia has been found to be associated with aortic valve stenosis and to resemble the inflammatory process of atherosclerosis in many studies.As such, available information suggests patient factors (thrombosis, diabetes, hypercholesterolemia) may have contributed to the reported event.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.Since no edwards product defects or labeling deficiencies were identified, no corrective or preventative action is required.
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