title: Transcatheter mitral valve repair in osteogenesis imperfecta associated mitral valve regurgitation.
abstract: OBJECTIVE
  Osteogenesis imperfecta is associated with increased prevalence of significant mitral valve regurgitation. Surgical mitral valve repair and replacement are feasible but are associated with increased risk of bleeding and dehiscence of implanted valves may occur more frequently. The present case report describes the outcomes of transcatheter mitral valve repair in a patient with osteogenesis imperfecta.
  
  
  METHODS
  A 60 year-old patient with osteogenesis imperfecta and associated symptomatic moderate to severe mitral regurgitation underwent transthoracic echocardiography which showed a nondilated left ventricle with preserved systolic function and moderate to severe mitral regurgitation. On transoesophageal echocardiography the regurgitant jet originated between the anterolateral scallops of the anterior and posterior leaflets (A1-P1). Considering the comorbidities associated with osteogenesis imperfecta the patient was accepted for transcatheter mitral valve repair using the Mitraclip device (Abbott vascular, Menlo, CA).
  
  
  RESULTS
  Under fluoroscopy and 3D transoesophageal echocardiography guidance, a Mitraclip device was implanted between the anterolateral and central scallops with significant reduction of mitral regurgitation. The postoperative evolution was uneventful. At one month follow-up, transthoracic echocardiography showed a stable position of the Mitraclip device with no mitral regurgitation.
  
  
  CONCLUSIONS
  Transcatheter mitral valve repair is feasible and safe in patients with osteogenesis imperfecta and associated symptomatic significant mitral regurgitation.
authors.affiliation: Department of Cardiology, Leiden University Medical Center.
authors.forename: Frank
authors.initials: F
authors.lastname: van der Kley
authors.affiliation: Department of Cardiology, Leiden University Medical Center. Electronic address: v.delgado@lumc.nl.
authors.forename: Victoria
authors.initials: V
authors.lastname: Delgado
authors.affiliation: Department of Cardiology, Leiden University Medical Center.
authors.forename: Nina
authors.initials: N
authors.lastname: Ajmone Marsan
authors.affiliation: Department of Cardiology, Leiden University Medical Center.
authors.forename: Martin J
authors.initials: MJ
authors.lastname: Schalij
mesh_terms: D017548:Echocardiography, Transesophageal; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000000981:diagnostic imaging / Q000601:surgery; D008944:Mitral Valve Insufficiency / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery; D010013:Osteogenesis Imperfecta / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery; D065467:Transcatheter Aortic Valve Replacement
keywords: 3D transoesophageal echocardiography; Mitral regurgitation; Operative risk; Osteogenesis imperfecta; Transcatheter mitral valve repair