From: The assessment of left ventricular diastolic function: guidance and recommendations from the British Society of Echocardiography
Age and sex-specific cut-off for E/A ratio and E velocity
Age
18–40 y
41–65 y
 > 65 y
Sex
Male
Female
All
E/A ratio
 < 0.9
 < 1.1
 < 0.7
 < 0.5
E velocity (m/s)
 < 0.6
 < 0.4