Table 4 The USG findings and prenatal diagnosis of 492 twin pregnancies with NIPT results indicating low risk

Type

No.^a

Type

No.

Type

No.

Type

No.

Type

No.

Type(A/B)

No.

Type(A/B)

No.

Type(A/B)

No.

CPC

36

MM

2^††

VSD + CPC

3^†††

FGR

19^{†††‡‡‡‡}

PH

9^†

CPC/CPC

6

SD/CPC

1^‡

FGR/FGR

9^{††‡‡‡‡‡}

PE

19

VSD

3^†‡‡

VSD + AC + NT

1^†

FGR + CPC

3

SB

1^‡

PE/PE

2

PEV + CD/CD

1^‡

FGR + CPC/CPC

1

VM

8^{†‡‡‡‡}

VR

1^†

AC + VM

1^‡

FGR + VM

1^‡

SB + SUA

1^‡

CPC/SUA

2

BM/FGR

1^†

FGR/CPC

1^‡

ARSA

7^††‡‡

SPD

1^†

AC + PLSVC + PE

1^†

FGR + NT

1^†

LC

2

CPC/CPC + PE

1

AOLK/PEV

1^†

FGR + HI/ECM

1

NT

3^‡‡‡

EK

1^‡

NT + PEV

1^†

FGR + SUA

1

ARA

1

CPC/PE

1

VSD/CPC + FGR

1^†

FGR + VM/ARSA

1^†

SUA

3

PPD

1^‡

FGR + SCD

1^†

NDC

1

CPC/DIVC

1

CD/SUA + FGR

1^‡

FGR/SUA + PH

1^†

HI

2

TOF

1^†

FGR + PH

1^‡

CC

1^‡

CPC/VM

1^‡

DA/HI

1^‡

FGR/PRUV

1^‡

NBA

1^‡

MM + SB

1^†

FGR + HI + SB

1^‡

ARSA/SB

1^‡

PK/CPC

1^†

FGR/SEC

1^†

PRUV

1

FGR + VM + SB

1^†

EIF/EIF

1

FGR/FGR + PH

1^†

PLSVC

1

HI/HI

1^‡

FGR + CPC/FGR

2^†‡

RAA

1^†

NBA/NBA

1^†

FGR/FGR + SB

1^†

GD

1^†

NT/PE

1^†

CNPT/CNPT

1

ECM

1

VM/VM

1^†

GE/NDC

1

WCV

1^‡

AOVC

1^†

SFL

1

Total

81

11

7

29

16

20

8

22

RPD

17

11

7

13

4

6

8

16

APD

6

7

6

6

1

3

4

8

PDR

35.3%

63.6%

85.7%

46.2%

25.0%

50.0%

50.0%

50.0%

Results

1VUS

3VUS

N

1VUS

N

N

N

2VUS