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Posts Tagged ‘atrial fibrillation and diastolic dysfunction’

Doppler Mitral Inflow velocity profile   is the key to  assess LV diastolic function . The ratio between  E and A has become most popular parameter .

In the absence of atrial contraction what shall we do ?

The answer is simple .  We have 2 D parameters of LV diastolic function.

LA dimension ( > 30 % basal dimension which is  usually >  4 cm  ) is a most specific marker of diastolic dysfunction in the absence of   mitral regurgitation or stenosis.

The only available  velocity E wave profile  can help .A short  E deceleration time in a short cycle  would suggest  significant diastolic dysfunction.High amplitude   E  wave  > 2  M/sec in the absence of MR  will suggest diastolic dysfunction .

Curiously  ,   it can be  assumed    an episode of   lone AF  per-se   ,  be an indicator of diastolic stress for the left atrium .

After all ,  why should a person all of a sudden develop an episode of AF .(Hypoxia, Ischemia ,  excluded )

Other parameters.

Mitral annular velocities / E propagation velocity   / E/E’  are other tissue Doppler parameters  can be used.

Pulmonary venous flow velocity is  largely not useful  (Since A reversal does not occur )

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