Cardiac magnetic resonance determinants of functional mitral regurgitation in ischemic and non ischemic left ventricular dysfunction

  • Covadonga Fernández-Golfín
  • Alberto De Agustin
  • M. Carmen Manzano
  • Ana Bustos
  • Tibisay Sánchez
  • Leopoldo Pérez de Isla
  • Manuel Fuentes
  • Carlos Macaya
  • José Zamorano
Original Paper
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Abstract

Functional mitral regurgitation (FMR) is frequent in left ventricular (LV) dilatation/dysfunction. Echocardiographic predictors of FMR are known. However, cardiac magnetic resonance (CMR) predictors of FMR have not been fully addressed. The aim of the study was to evaluate CMR mitral valve (MV) parameters associated with FMR in ischemic and non ischemic LV dysfunction. 80 patients with LV ejection fraction bellow 45% and/or left ventricular dilatation of ischemic and non ischemic etiology were included. Cine-MR images (steady state free-precession) were acquired in a short-axis and 4 chambers views where MV evaluation was performed. Delayed enhancement was performed as well. Significant FMR was established as more than mild MR according to the echocardiographic report. Mean age was 59 years, males 79%. FMR was detected in 20 patients (25%) Significant differences were noted in LV functional parameters and in most MV parameters according to the presence of significant FMR. However, differences were noted between ischemic and non ischemic groups. In the first, differences in most MV parameters remained significant while in the non ischemic, only systolic and diastolic interpapillary muscle distance (1.60 vs. 2.19 cm, P = 0.001; 2. 51 vs. 3.04, P = 0.008) were predictors of FMR. FMR is associated with a more severe LV dilatation/dysfunction in the overall population. CMR MV parameters are associated with the presence of significant FMR and are different between ischemic and non ischemic patients. CMR evaluation of these patients may help in risk stratification as well as in surgical candidate selection.

Keywords

Functional mitral regurgitation Cardiac magnetic resonance Ischemic cardiomyopathy Non-ischemic cardiomyopathy 
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Notes

Conflict of interest

None.

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Copyright information

© Springer Science+Business Media, B.V. 2010

Authors and Affiliations

  • Covadonga Fernández-Golfín
    • 1
  • Alberto De Agustin
    • 1
  • M. Carmen Manzano
    • 1
  • Ana Bustos
    • 2
  • Tibisay Sánchez
    • 1
  • Leopoldo Pérez de Isla
    • 1
  • Manuel Fuentes
    • 3
  • Carlos Macaya
    • 1
  • José Zamorano
    • 1
  1. 1.Cardiovascular Institute, Cardiac Imaging UnitClínico San Carlos University HospitalMadridSpain
  2. 2.Radiology DepartmentClínico San Carlos University HospitalMadridSpain
  3. 3.Preventive Medicine DepartmentClínico San Carlos University HospitalMadridSpain

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