Heart right ventricle cross-sectional diameter       

                       (end systole)

                 Wladimiroff JW, Voster R, and McGhie JS.

        Normal cardiac ventricular geometry and function during

                          the last trimester of pregnancy.

                   Br J Obstet Gynaecol 1982;89:839-844

 

GA

(wks)

-2SD

Mean

+2SD

28

4.8

8

11.2

29

7.5

8.3

10.9

30

6.8

9

11.2

31

7.1

9.3

11.5

32

6.9

9.7

12.5

33

5.8

9.8

13.8

34

7.1

9.9

12.7

35

7

11

15

36

8.5

11.7

14.9

37

9.1

12.3

15.5

38

8.9

12.5

16.1

39

9.9

12.7

15.5

40

11.9

14.2

16.5