[Soul]

We know the phases of diastolic function (isovolumic relaxation, early filling, diastasis, and late filling-atrial kick).
But someone asked me about the stages (grades) of DIASTOLIC DYSFUNCTION. I read my textbook, and found that diastolic dysfunction can be assesed by Doppler Echo, and can be divided into four stages (looking at the ratio of E/A- transmitral echo). Any idea? Plz share ur knowledge.