|
As reported in the article, 'buddy wire technique for rescuing an embolized tavr valve', during a right transfemoral tavr procedure with a 29mm sapien 3 ultra resilia valve, rapid pacing at 180 beats/min was initiated using a temporary right ventricular pacemaker, and the valve was deployed.During deployment, the patient developed premature ventricular contractions and loss of capture, leading to embolization of the partially deployed valve into the ascending aorta.Using the delivery balloon, the valve was retrieved into the descending aorta; however, a corner of the valve caught the lesser curvature of the aorta, causing the balloon to slip through the valve.Troubleshooting was done but was unsuccessful.The team then used a buddy wire technique with 2 wires in a single catheter which enabling partial expansion of the embolized valve and facilitating coaxial repositioning within the aorta.Positioning was confirmed with angiography, and the valve was ballooned for further expansion in the ascending aorta, followed by full expansion in the descending aorta.The patient remained hemodynamically stable.A second 29mm sapien 3 ultra resilia valve was then fully deployed across the native aortic valve under rapid pacing at 200 beats/min.Aortography confirmed excellent positioning.The patient was discharged home on postoperative day 1.Clinical follow up at 1 month revealed no new symptoms and improved exertional dyspnea.
|
|
Per the instructions for use (ifu), valve embolization is a known potential adverse event associated with the transcatheter valve replacement (tvr) procedure.There are multiple patient and procedural factors that alone or in combination can cause or contribute to embolization of the device, including improper positioning before deployment, poor image intensifier angle, poor coaxial alignment of the valve and delivery system, severe septal hypertrophy, minimally or bulky/severely calcified leaflets, loss of pacing capture, a narrow sinotubular junction (in aortic position procedures), rapid deployment, the release of stored tension during deployment, inaccurate measurement of the landing zone, and movement of the delivery system by the operator.The ifu cautions that incorrect sizing of the landing zone may lead to paravalvular leak, migration, or embolization.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 embolization (i.E., minimal leaflet calcification, severe septal hypertrophy), 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 suggest patient and procedural factors (premature ventricular contractions and loss of capture) 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.
|