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Bailout clipping of a leaflet perforation during mitral transcatheter edge-to-edge repair using a larger clip size: a case report

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PROVIDER: S-EPMC10500417 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature

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Successful transcatheter edge-to-edge repair of mitral valve leaflet perforation.

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Codeployment of a percutaneous edge-to-edge mitral valve repair device and a ventriculoseptal defect occluder device to address complex mitral regurgitation with leaflet perforation.

Project description:An 80-year-old male with severe, complex mitral regurgitation (MR) after recent transcatheter aortic valve replacement presented in heart failure for percutaneous mitral valve repair and possible tricuspid valve repair. Transesopheageal echocardiography (TEE) demonstrated mixed Carpentier Types 1 and 2 components with annular dilation, two leaflet perforations, and excessive leaflet motion (P2 flail). There were three distinct MR jets appreciated reflecting a central coaptation defect and two posterior mitral valve leaflet perforations emanating from a cystic dilatation. Under TEE guidance transseptal puncture and percutaneous edge-to-edge mitral valve repair was performed with a MitraClip XTR device (Abbott, IL). A 10 mm Amplatzer Muscular VSD Occluder (Abbott, Abbott Park, IL) was deployed to close one of the perforations on the posterior leaflet with a significant reduction in MR severity. Attempts at crossing the remaining defect were unsuccessful and the procedure was concluded. The patient recovered uneventfully and transthoracic echocardiography on postoperative day (POD) 1 and again on POD 34 demonstrated normal systolic dominance on pulmonary venous Doppler interrogation, mild to moderate MR, and a mean transvalvular gradient of 5 mmHg. Both devices appeared firmly attached and stable. This is the first documented use of a VSD occluder device in this clinical scenario. Management of complex MR with an approach combining edge-to-edge repair for a central coaptation defect and leaflet flail with codeployment of a VSD occluder device to address a perforated leaflet is feasible and can achieve durable results.

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Double perforation of anterior mitral leaflet aneurysm in a patient with mitral and aortic leaflet aneurysms.

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Clip opening while locked after transcatheter edge-to-edge mitral valve repair with different onset times: a case series.

Project description:BackgroundTranscatheter edge-to-edge mitral valve repair is now available in many countries and has achieved favourable therapeutic outcomes. However, there have been no reported cases of clip opening while locked (COWL) during the acute phase using the MitraClip G4 system (Abbott, Abbott Park, IL, USA).Case summaryWe present two cases of COWL occurring at different phases: one immediately after clip release and the other 2 days post-procedure. In both cases, the initial treatment involved the use of the XTW system. Subsequently, an additional XT system was deployed for the deterioration of mitral regurgitation caused by COWL, without any complications.DiscussionThe MitraClip G4 system offers four size variations, providing a larger grasping area and increased flexibility for accessing complex lesions. Furthermore, the complication rate decreased with increasing operator experience and device generation. However, it has been reported that COWL can occur after the clip is deployed during TEER. Although the mechanism of COWL is unclear, the nature and mobility of the valve leaflets and the product specificity of the MitraClip may be involved.

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