Mitral Valve E/A Ratio

                  Rizzo G, Arduini D, Romanini C, Mancuso S.

    Doppler echocardiographic assessment of atrioventricular velocity

          waveforms in normal and small-for-gestational-age fetuses.

                         Br J Obstet Gynaecol 1988;95:65-69

 

GA

(wks)

50th

 Percentile

5th

Percentile

95th

 Percentile

20

0.59

0.4

0.78

21

0.6

0.41

0.79

22

0.62

0.43

0.81

23

0.64

0.45

0.82

24

0.65

0.46

0.84

25

0.67

0.48

0.85

26

0.68

0.49

0.86

27

0.69

0.51

0.88

28

0.7

0.52

0.89

29

0.72

0.53

0.9

30

0.73

0.54

0.91

31

0.74

0.55

0.92

32

0.75

0.56

0.93

33

0.76

0.57

0.94

34

0.77

0.58

0.95

35

0.78

0.59

0.96

36

0.78

0.6

0.97

37

0.79

0.6

0.97

38

0.79

0.61

0.98

39

0.8

0.61

0.99

40

0.81

0.62

0.99