LV relaxation, filling pressures and 2D and Doppler findings according to LV diastolic function
	Normal	Grade I	Grade II	Grade III
LV relaxation	Normal	Impaired	Impaired	Impaired
LAP	Normal	Low or Normal	Elevated	Elevated
Mitral E/A ratio	≥0.8	≤0.8	>0.8 to < 2	>2
Average E/e' ratio	< 10	< 10	10-14	> 14
Peak TR velocity (m/sec)	< 2.8	< 2.8	> 2.8	> 2.8
LA volume index	Normal	Normal or increased	Increased	Increased