Geometric determinants of ischemic mitral regurgitation.
M Komeda, JR Glasson, AF Bolger, GT Daughters, A MacIsaac, SN Oesterle, NB Ingels, DC Miller
Circulation | Published : 1997
BACKGROUND: The precise geometric determinants of ischemic mitral regurgitation (MR) are incompletely understood, although such knowledge is important to improve mitral valve reparative techniques. METHODS AND RESULTS: The three-dimensional geometry of the mitral apparatus was studied using radiopaque markers in eight closed-chest dogs with acute posterior left ventricular wall ischemia either with (MR) or without (no-MR) MR as assessed by using color Doppler. Using a cylindrical coordinate system (origin at the midpoint between the mitral annulus commissures [anterolateral and posteromedial] and z-axis directed toward the left ventricular apex), we measured the distance to the midpoint (z, ..View full abstract