| Re: Staging of diastolic dysfunction -
22-07-2007, 03:01 AM
These refer to doppler patterns through the mitral annulus (i.e. ventricular inflow tract)
stage/grade 1: E:A ratio approaching 1
stage/grade 2: E:A ratio less than 1 (i.e. larger A wave than E wave)
stage/grade 3: Pseudonormalization of the E:A ratio (Both E wave and A wave enlarge, with E wave larger than A wave as is normally found, but both are elevated due to relaxation difficulty, and time course for the wave is shorter)
stage/grade 4: Disappearance of the A wave (the atria cannot contract against a very rigid ventricle so the A wave disappears)
got it frm answer.com.. hope it helps.. |