Table 7B. Stages of Secondary MR
Stage Definition Valve Anatomy
A At risk of MR • Normal valve leaflets, chords, and
annulus in a patient with coronary
disease or cardiomyopathy
B Progressive MR • Regional wall motion abnormalities
with mild tethering of mitral leaflet
• Annular dilation with mild loss
of central coaptation of the mitral
leaflets
C Asymptomatic severe MR • Regional wall motion abnormalities
and/or LV dilation with severe
tethering of mitral leaflet
• Annular dilation with severe loss
of central coaptation of the mitral
leaflets
D Symptomatic severe MR • Regional wall motion abnormalities
and/or LV dilation with severe
tethering of mitral leaflet
• Annular dilation with severe loss of
central coaptation of mitral leaflets
Mitral Regurgitation
6
