(b)(4).Ring dehiscence may occur early or late.When it occurs in the early post-operative period, it is typically a result of an inadequate valve repair in combination with friable myocardial tissue.Late dehiscence can occur as a result of successive dilatation of cardiac structures that result from progression of disease or from endocarditis.In this case, the ring was successfully implanted for over four (4) years.The root cause of this event cannot be conclusively determined; however, this event was likely due to patient related factors.There has been no allegation of a device malfunction.The device history record (dhr) review was completed and this device passed all manufacturing and sterilization inspections prior to release for distribution.Edwards will continue to review of all reported events and perform trend analysis on a monthly basis.If action is required, appropriate investigation will be performed.
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Edwards lifesciences maintains an implant patient registry.This registry is a patient tracking mechanism for serialized edwards implantable devices (bioprosthetic heart valves and annuloplasty rings), rather than a true post-market surveillance registry.Through the registry, edwards is notified when these devices are implanted.In addition, patient and/or device status may be reported to the registry via the implantation data cards.The information is received from various sources (e.G.Surgeon, hospital and patient family members) and is not received in the form of a conventional "customer complaint." the information reported may or may not be related to the edwards device.In this case, it was reported that this annuloplasty ring, implanted for four (4) years and three (3) months was explanted due to tricuspid insufficiency, secondary to ring dehiscence.The explanted device was replaced with an edwards bioprosthetic valve.No other details provided.
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