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Table 1 General echocardiographic finds and the 5th, 50th, and 95th percentiles of fetal foramen ovale absolute blood flow (ml/min) and weight-indexed foramen ovale blood volume (ml/min/kg) between the 20th and 40th weeks

From: Evaluation of fetal foramen ovale blood flow by pulsed Doppler ultrasonography combined with spatiotemporal image correlation

 

QFO (ml/min)

iQFO (ml/min/kg)

GA

n

RALD

LALD

ASL

SD

5th

50th

95th

SD

5th

50th

95th

20–20+6

20

5.61 ± 0.29

5.38 ± 0.31

9.94 ± 0.91

36.30

93.31

160.10

212.37

108.32

221.14

453.56

636.34

21–21+6

21

6.11 ± 0.58

5.83 ± 0.58

10.29 ± 0.98

34.84

123.47

191.39

230.49

89.66

252.55

445.09

568.94

22-22+6

21

6.54 ± 0.42

6.19 ± 0.34

10.58 ± 0.69

27.19

155.12

208.82

254.24

57.13

292.09

401.58

470.93

23–23+6

29

7.21 ± 0.59

6.79 ± 0.49

10.85 ± 0.64

37.53

157.62

242.61

300.78

76.82

271.65

396.41

542.66

24–24+6

36

7.48 ± 0.64

7.08 ± 0.65

11.09 ± 0.64

54.35

211.55

260.12

419.32

79.22

321.14

402.91

609.29

25–25+6

20

7.78 ± 0.62

7.28 ± 0.58

11.19 ± 0.67

28.55

264.13

313.88

365.91

54.09

333.91

412.44

516.23

26–26+6

20

8.15 ± 0.65

7.68 ± 0.78

11.29 ± 0.56

25.86

304.34

352.35

399.10

35.24

352.79

417.53

476.38

27–27+6

20

8.75 ± 0.65

8.08 ± 0.65

11.39 ± 0.52

32.68

308.05

371.94

450.99

35.74

279.05

341.14

410.61

28–28+6

23

9.43 ± 0.69

8.68 ± 0.76

11.48 ± 0.56

78.43

305.97

419.07

580.45

74.10

232.39

344.69

519.34

29–29+6

26

9.97 ± 0.81

9.42 ± 0.69

11.58 ± 0.55

60.23

381.06

489.94

591.04

39.67

250.94

342.00

411.94

30–30+6

20

10.42 ± 0.65

9.68 ± 0.62

11.64 ± 0.65

69.93

389.49

491.07

606.57

45.93

244.19

320.79

399.09

31–31+6

20

10.60 ± 0.71

9.78 ± 0.66

11.76 ± 0.61

54.34

405.23

498.51

607.57

45.25

213.89

306.44

390.30

32–32+6

20

10.94 ± 1.09

10.09 ± 0.96

11.83 ± 0.44

56.31

410.44

514.63

612.74

37.99

215.73

270.29

339.48

33–33+6

20

11.61 ± 0.86

10.83 ± 1.00

11.91 ± 0.38

42.26

450.88

517.82

613.29

23.52

219.17

262.57

312.62

34–34+6

20

12.07 ± 0.83

11.33 ± 0.67

12.13 ± 0.39

43.47

458.19

524.65

628.23

20.97

178.39

212.26

261.95

35–35+6

20

12.50 ± 0.82

11.89 ± 0.86

12.17 ± 0.41

57.58

423.19

531.33

636.65

29.49

141.25

205.03

250.59

36–36+6

21

12.83 ± 0.60

12.11 ± 0.46

12.22 ± 0.39

72.63

451.00

560.04

684.66

29.73

147.63

197.39

259.44

37–37+6

21

13.37 ± 0.57

12.61 ± 0.79

12.27 ± 0.32

66.73

452.52

565.39

724.57

22.39

155.80

182.68

229.17

38–38+6

21

13.96 ± 0.64

13.12 ± 0.71

12.29 ± 0.43

76.68

472.33

578.14

743.19

24.71

154.04

184.86

233.39

39–40

21

14.46 ± 0.63

13.66 ± 0.65

12.41 ± 0.54

78.09

491.03

576.07

752.35

25.71

140.99

179.97

237.64

  1. Data expressed as mean ± standard deviation
  2. GA gestational age, n number of pregnant women at each gestational age, SD standard deviation, QFO Foramen ovale absolute blood flow, iQFO Weight-indexed foramen ovale flow, RALD Right atrial transverse diameter at end of systole, LALD Left atrial transverse diameter at end of systole, ASL Length of atrial septum