Fetal middle cerebral artery peak systolic velocity (MCA-PSV).

G Mari et al. N Engl J Med 2000; 342: 9-14

 

Median and 1.5 multiples of the median (MoM) values during pregnancy

 

MCA-PSV (cm/s)

GA (weeks)

Median

1.5 MoM

14

19.3

28.9

15

20.2

30.3

16

21.1

31.7

17

22.1

33.2

18

23.2

34.8

19

24.3

36.5

20

25.5

38.2

21

26.7

40.0

22

27.9

41.9

23

29.3

43.9

24

30.7

46.0

25

32.1

48.2

26

33.6

50.4

27

35.2

52.8

28

36.9

55.4

29

38.7

58.0

30

40.5

60.7

31

42.4

63.6

32

44.4

66.6

33

46.5

69.8

34

48.7

73.1

35

51.1

76.6

36

53.5

80.2

37

56.0

84.0

38

58.7

88.0

39

61.5

92.2

40

64.4

96.6