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Per the instructions for use (ifu), structural valve deterioration (wear, fracture, calcification, leaflet tear/tearing from the stent posts, leaflet retraction, suture line disruption of components of a prosthetic valve, thickening, stenosis), is a potential adverse event associated with bioprosthetic heart valves.Per a technical summary written by edwards lifesciences, calcific degeneration is a common cause of bioprosthetic heart valve failures.Many factors contribute to the onset and propagation of calcification.These include patient factors (age, disease state, pharmacological intervention, etc.), mechanical stress related to the valve's hemodynamic performance, and glutaraldehyde fixation of tissue.Of these, the fixation process is a relatively minor contributor to calcification for edwards' tissue valves due to subsequent anti-calcification treatments during manufacturing.Though numerous studies have been conducted on preventive calcification strategies in bioprosthetic heart valves, the causes of calcification are not fully understood and there are still no mechanisms or medical therapies which fully prevent bioprosthesis from calcifying.In this case, there was no allegation or indication a manufacturing non-conformance contributed to this product problem.Although the exact cause and source of the calcification cannot be determined, it is possible that the patient's advanced age and progression of the disease process may have caused or contributed to the event.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.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.As such, neither a product risk assessment, nor corrective or preventative actions are required at this time.
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It was reported by the field clinical specialist (fcs) that approximately 5 years, 5 months, and 21 days post transfemoral transcatheter aortic valve replacement (tavr) with a 29 mm sapien 3 valve the valve failed due to possible thrombus/halt.The valve is being checked and there is no further information at this time.Imagery review was provided and found that this patient computed tomography (ct) showed, the s3 valve has mild to moderate calcifications of all 3 prosthetic leaflets.While there is thickening of the leaflets predominantly at the r-lcc commissure which could suggest leaflet thrombosis or pannus, this is not likely an acute process.Even if there was halt, at this point it is sequelae rather than modifiable, and the calcifications suggests typical valve degeneration as the cause rather than halt.It is unlikely that a trial of anticoagulation will improve leaflet function given the calcifications.Additional information was received; the patient had a valve in valve with a 26 mm sapien 3 ultra resilia valve.The post echo showed a gradient of 8 and there was no leak.The patient tolerated the procedure well.
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