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A novel mechanical mitral valve replacement using Sapien XT
Megan Koehle1, Justin A Strote2, Mark Guadagnoli2
1Ludwig Maximilian University of Munich, Munchen, Germany.
Summary
A hybrid transcatheter mitral valve replacement (TMVR) procedure successfully treated severe mitral stenosis in a high-risk patient with a failed mechanical mitral valve. This innovative approach offers a feasible solution for complex valve cases.
Area of Science:
- Cardiovascular Surgery
- Interventional Cardiology
- Biomedical Engineering
Background:
- Mechanical mitral valve prostheses can fail over time, leading to severe complications.
- Redo mitral valve replacement (MVR) in patients with prior mechanical valves carries high surgical risk.
Observation:
- A 66-year-old female presented with refractory congestive heart failure due to immobility of a St. Jude mechanical mitral valve disk, causing severe mitral stenosis.
- The patient had significant comorbidities and a high predicted mortality (39%) for conventional redo-MVR.
Findings:
- A hybrid transatrial procedure was performed, involving removal of mechanical valve discs and deployment of a new transcatheter valve within the existing St. Jude ring.
- The patient experienced an event-free recovery and demonstrated significant clinical improvement, with reduced heart failure symptoms and normal valve function one year post-procedure.
Implications:
- Transatrial hybrid TMVR within a mechanical valve ring is a feasible and potentially life-saving strategy for high-risk patients.
- This technique may reduce morbidity and mortality associated with complex redo-MVR procedures.
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