Quantification of tethering of mitral valve in ischemic MR
Both two dimensional and three dimensional echocardiography are useful in quantifying the tethering of mitral leaflets in ischemic mitral regurgitation (IMR).
Tenting area is measured by two dimensional echocardiography as the area from the mitral leaflets to the annular plane in mid systole.
Coaptation height / depth:
It is the maximal distance from the leaflet tips to the annular plane. Coaptation depth has been correlated with the severity of ischemic mitral regurgitation.
Tethering volume is the volume from the leaflets to the annular plane, measured by three dimensional echocardiography.
Tethering distance is the distance from the papillary muscle tip to the mitral annulus, measured by three dimensional echocardiography.