Table 1

Grading scheme for diastolic function

Echo measurement	Normal diastolic function	Mild diastolic dysfunction	Moderate diastolic dysfunction	Severe diastolic dysfunction
Sinus rhythm
E/e′	<10	<10	≥10	≥10
E/A	1–2	<1	1–2	>2
Mitral DT	150–200	>200	150–200	<150
Atrial fibrillation
E/e′	<10	<10	≥10	≥10
Mitral DT	150–200	>200	150–200	<150
IVRT	50–100	>100	50–100	<50

E/e′ lateral was used except in the case of a lateral myocardial infarction where septal E/e′ was used.
A, peak late diastolic transmitral flow velocity (cm/s); DT, early filling deceleration time (ms); E, peak early diastolic transmitral flow velocity (cm/s); e′, early diastolic annular velocity (cm/s); IVRT, isovolumic relaxation time (ms).