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Per the instructions for use (ifu), paravalvular leak (pvl) is a known potential adverse event associated with bioprosthetic heart valves and the transcatheter valve replacement (tvr) procedure.Paravalvular leak refers to blood flowing through a channel between the structure of the implanted valve and the landing zone, as a result of a lack of appropriate sealing of the valve to the target site.Some pvl is not uncommon post-deployment.Many cases are mild to moderate, and either resolve over time or do not cause symptoms.Others may be more clinically significant and require intervention.The patient screening manual and the procedure didactic identify several procedural and anatomical factors which could contribute to pvl, including device malposition, inaccurate measurement of the landing zone, uneven distribution of calcium on the landing zone, bulky or severe calcification, an elliptical annulus shape, and valve under-sizing.The mechanism behind worsening or late pvl is not well understood but may be related to cardiac remodeling.Edwards extensively trains physicians before they are qualified to use the sapien transcatheter heart valves (all models).The device training manuals instructs the operator on proper imaging screening requirements, including the use of good quality echocardiography and/or computed tomography (ct) to appropriately measure the landing zone, assess the content and distribution of calcium, and other patient anatomical factors.Multiple imaging modalities should be considered during valve size selection.Contraindications, important considerations when assessing the valve, and choosing the proper transcatheter heart valve are also discussed.The device training manuals also instruct the operator on proper positioning and deployment of the valve, including patients screening and procedural considerations.Device preparation, approach, deployment, imaging, procedure-specific training manuals, and proctored procedures are also included.In this case, there was no allegation or indication a product malfunction contributed to this adverse event.Investigation results are inconclusive due to the limited information provided.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.
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As reported through edwards patient support, approximately 1 year post transfemoral tavr (transcatheter aortic valve replacement) procedure with a 26mm sapien 3 ultra resilia valve in the native aortic position, the patient presented at follow-up with a ''moderate leakage around the perimeter of his valve'' as detected per echocardiography (echo), characterized as a paravalvular leak (pvl).There were discussions of possibly needing a ''plug'' procedure.The patient has been scheduled for a follow-up echo next month.According to the provided medical records, the right transfemoral transcatheter heart valve implant was successful with transesophageal echocardiogram (tee) confirmed absence of significant pvl and a post implant gradient of 6mmhg, as noted per tavr operative note.Approximately 2 months later, transthoracic echocardiogram (tte) revealed the following: bioprosthetic aortic valve in place and well seated, no central regurgitation, moderate pvl is present with 2 jets noted, aortic valve (av) peak/mean gradient of 27/14mmhg, and effective orifice area (eoa) of 1.9cm^2.No treatment or intervention for pvl were mentioned in the records.Additional information provided per patient support indicating the cardiologist has recommended a plug for the pvl, scheduled in 2 to 3 months.
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