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As reported by the field clinical specialist, during native ai off-label case, this first 26mm sapien 3 ultra resilia valve drifted ventricular.A 2nd valve placed in a more aortic position to anchor 1st valve.There was no allegation that the ew devices were deficient in any way.The root cause for the initial valve migrating toward the left ventricle after deployment was that fact that this was an off label ai case and the lack of calcium to anchor the valve.This was a known risk and discussed with the implanters prior to the procedure.
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Per the instructions for use (ifu), valve migration requiring intervention is a known potential adverse event associated with transcatheter valve replacement (tvr).According to the literature review, valve migration results when forces acting on the transcatheter heart valve (thv) overcome the strength of attachment of the valve to the annulus.Stent valves are subjected to antegrade ejection forces during systole.Less-than-severe and non-uniformly distributed calcification of the leaflets, incorrect bioprosthetic valve sizing, and incomplete frame expansion can contribute to valve migration.Additionally, residual overhanging leaflets can exert downwards force during diastole, causing migration of the thv towards the ventricle.The device training manuals instruct the operator on proper positioning and deployment of the valve, including all procedural and anatomical considerations.Physicians are extensively trained by edwards before they are qualified to use the sapien transcatheter heart valves (all models).Training includes patient screening, device preparation, approach, deployment, imaging, procedure-specific training manuals, and proctored procedures.The correct alignment and positioning of the device at the point of deployment is emphasized as a key factor in the placement and fixation of the device.Operators are also instructed to use fluoroscopy as the primary method of visualization for positioning and deployment.In patients with high-risk anatomical features for migration (i.E., minimal leaflet calcification), balloon valvuloplasty may indicate potential balloon movement during valve deployment.In this case, there was no allegation or indication a product malfunction contributed to this adverse event.Investigation results that the root cause for the initial valve migrating toward the left ventricle after deployment was that fact that this was an off label ai case and the lack of calcium to anchor the valve which caused or contributed to this 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.The ifu and training manuals have been reviewed and no inadequacies have been identified with regards to warnings, contraindications, and the directions/conditions for the successful use of the device.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.For off-label cases add the following statement prior to the training manuals review paragraph: the device was used in off-label implantation in the aortic position for aortic insufficiency.As there are no specific ifu or training materials related to tavr procedures for aortic insufficiency, the available training materials were reviewed only for information potentially relevant to the device use.
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