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The investigation is still in progress; therefore, a conclusion has yet to be established.A supplemental report will be submitted accordingly upon investigation completion.Edwards will continue to review and monitor all reported events.Trends are monitored on a monthly basis and if action is required, appropriate investigation will be performed.
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It was reported that a patient with a 23mm 2700 pericardial aortic valve underwent a valve-in-valve procedure after an implant duration of five (5) years, 11 months due to aortic regurgitation.The tavr procedure was performed with a 23mm 9750tfx transcatheter valve.The patient tolerated the procedure well and left the or in stable condition.Per the physician, the valve did not fail but instead succumbed to the disease process.
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Regurgitation which develops progressively over time can be due to a number of issues including patient related factors or structural valve deterioration.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.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.The device history record (dhr) review was completed and this device passed all manufacturing and sterilization inspections prior to release for distribution.
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