Table 2 Sonographic measurements of placental indices of monochorionic diamniotic twins by gestational age

10

10.6

7–14.2

3.4–17.8

22.2

18.5–25.9

14.8–29.6

3.1

1.2–5

12

11.1

8.9–13.3

6.7–15.5

19.8

15.2–24.4

10.6–29

2.5

2–3

10

11.8

9.4–14.2

7–16.6

21.7

19.2–24.2

16.7–26.7

3.9

2.7–5.1

12

17.2

13.7–20.7

10.2–24.2

25.4

21.5–29.3

17.6–33.2

4.2

2.9–5.5

10

18.4

15.4–21.4

12.4–24.4

24.2

21.8–26.6

19.4–29

4.9

3.9–5.9

10

18.9

15.7–22.1

12.5–25.3

24.2

20.9–27.5

17.6–30.8

4.6

3.6–5.6

12

20.7

17–24.2

13.3–28.1

26.3

23.4–29.2

20.5–32.1

6.7

5.1–8.3

10

23.4

19.8–27

16.2–30.6

29.4

25.3–33.5

21.2–37.6

7.5

5.9–9.1

14

24.6

21–28.2

17.4–31.8

30.6

25.4–35.8

20.2–41

7.6

5.7–9.5

12

25.1

20.8–29.4

16.5–33.7

30.3

25–35.6

19.7–40.9

8.1

5.6–10.6

12

26.5

19.2–33.8

11.9–41.1

31

25.2–36.8

19.4–42.6

9.8

6.5–13.1

10

27.7

25.9–29.5

24.1–31.3

30.5

24.8–36.2

19.1–41.9

9.2

6.8–11.6

10

28

22.2–33.8

16.4–39.6

29.4

27–31.8

24.6–34.2

9

6.8–11.2

10

29.1

22–36.2

14.9–43.3

31.6

28.5–34.7

25.4–37.8

9.8

6.8–12.8

12

26.9

22.5–31.3

18.1–35.7

29.4

27.3–31.5

25.2–33.6

8.2

6.5–9.9

10

26.5

22.3–30.7

18.1–34.9

31.2

28.8–33.6

26.4–36

9.1

6.9–11.3

12

27.3

23.7–30.9

20.1–34.5

31.1

27.3–34.9

23.5–38.7

9.2

6.7–11.7

10

30.2

26.8–33.6

23.4–37

34.4

31–37.8

27.6–41.2

10.2

8.5–11.9

10

31.5

27–36

22.5–40.5

35.3

31.6–39

27.9–42.7

10.7

9.2–12.2