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It was reported that a patient with a 33mm 6900ptfx mitral valve underwent a valve-in-valve procedure after an implant duration of 4 years, 10 months due to leaflet immobility causing severe stenosis.The tmvr was performed with a 29mm 9755rsl transcatheter valve.Per medical records, the patient presented with heart failure, dizziness, pulmonary hypertension, fatigue.The patient had cardiac workup over time showing a well seated mitral valve with increasing gradients, immobile leaflets, stenosis, and no mr.
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The device history record (dhr) review was completed and this device passed all manufacturing and sterilization inspections prior to release for distribution.Leaflet immobility or leaflet restriction occurring over time, and not due to extrinsic physical interference, is a form of structural valve deterioration, which can result in significant regurgitation and/or stenosis.Tissue degeneration-related structural deterioration, either calcific or non-calcific, are common chronic failure modes for this type of bioprosthetic heart valve.Operational mechanical stress and biological factors are generally believed to be the major contributors to the non-calcific bioprosthetic tissue degeneration.Structural valve deterioration (svd) can, and typically does, lead to chronic central leaks over a period of time.Svd is the most common reason for bioprosthesis explant and encompasses multiple failure modes, including calcification, noncalcific degeneration, dehiscence, cusp thickening or fibrosis, or a combination of these.Such failure modes may occur singularly or concomitantly.Degeneration-related structural deterioration is most commonly related to patient factors and is not usually an indication of a device malfunction.The most likely cause is patient factors, including a history of dm2 and ckd.
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