Skip to main content

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