(b)(4).Device evaluation: the product was returned for evaluation.Customer report of mitral stenosis could not be confirmed through visual observations.Report of pannus growth was not confirmed.X-ray demonstrated ring intact.Cuts were observed on the cloth and silicone around the ring.Sutures remained attached.Post-operatively, the body undergoes various phases of the tissue response continuum resulting in the fibrous encapsulation of the ring.Local and systemic factors of the patient may play a role in the wound healing and inflammatory responses to biomaterials and implants.Based on the information received, a definitive root cause cannot be determined.No further corrective or preventative actions are required at this time.Edwards will continue to review and monitor all events through the use of edwards quality systems.Trends are monitored on a monthly basis and if action is required, appropriate investigation will be performed.
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Edwards received information that this 28 mm mitral annuloplasty ring, implanted approximately three (3) years and two (2) months, was explanted due to mitral stenosis secondary to pannus growth.This device was originally implanted for mitral valvuloplasty to correct mitral regurgitation.This device was explanted and replaced with a 27 mm valve with no adverse patient effects reported as a result of the valve replacement.The condition of the valve at explant was reported as ¿pannus growth on this ring was observed and it led to mitral stenosis¿.The patient status was reported as ¿recovered¿ at icu.The device was returned for evaluation.There was no allegation of device malfunction.Multiple cardiac surgical procedure: aortic valve replacement with a 25 mm valve.
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