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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 suggest the patient had persistent pvl 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.
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As reported by the field clinical specialist (fcs), prior to intervention the fcs became aware of an event involving an 83'year'old female patient with a history of severe symptomatic aortic stenosis previously treated with a transcatheter aortic valve replacement (tavr) in (b)(6) 2016.The patient subsequently developed complete heart block following the index procedure, requiring dual'chamber pacemaker placement.The patient also developed moderate to severe paravalvular regurgitation (pvl) after the original implant.Multiple interventions were attempted to address the persistent pvl.A paravalvular leak closure procedure was attempted in 2017 but was unsuccessful.Later in 2017, a balloon aortic valvuloplasty was performed to improve valve apposition to the annulus; however, the pvl continued to persist despite these efforts.These details were reported based on information provided by an outside physician in august of a prior year.Approximately 9 years and 4 months post tavr, the persistent pvl was treated with a 20mm sapien 3 ultra valve.The patient remained in stable condition.
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