Immediate Single-Leaflet Device Detachment in a Patient with Marfan Syndrome Treated with Bail-Out Edge-to-Edge Mitral Valve Repair

Mitral transcatheter edge-to-edge repair (MTEER) is the first transcatheter technique for mitral valve repair (MVR) in patients with severe mitral regurgitation (MR) who are considered at high risk for surgical intervention. Mitral valve prolapse with subsequent MR is a common manifestation of Marfan syndrome. MTEER has never been reported as a treatment option in such kind of patients. We describe the case of a 30-year-old patient who was known to have Marfan syndrome which was complicated with severe symptomatic MR. The surgical risk was high, and he preferred transcatheter intervention. MTEER was complicated with an immediate single-leaflet detachment of the first deployed MitraClip XTR. Bail-out edge-to-edge MVR with two additional MitraClip XTR was performed successfully to stabilize the detached clip. The patient's symptoms and quality of life improved significantly after 10 months of follow-up.