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Table 1 Patient demographics

From: Ultrasound angiology reference standards of fetal cerebroplacental flow in normal Egyptian gestation: statistical analysis of one thousand observations

  Number of pregnant women Maternal age FHR EFW Placental grade Placental thickness (cm)
13 W 10 18–40 154–177 42–64 I 1.0–2.0
14 W 10 25–37 153–164 64–85 I–II 1.5–3.0
15 W 10 23–40 143–165 96–127 I–II 1.9–2.9
16 W 10 24–42 143–162 121–174 I–II 1.7–3.1
17 W 10 18–35 144–191 135–193 I–II 2.0–3.0
18 W 10 22–31 146–159 225–235 I–II 2.5–3.1
19 W 10 24–34 148–158 263–408 I–II 2.0–3.5
20 W 11 16–35 123–157 294–362 I–II 1.7–3.1
21 W 10 25–38 146–154 412–556 II 2.2–3.1
22 W 10 24–28 152–161 453–549 II–III 2.5–3.4
23 W 10 23–34 139–161 533–617 II 2.2–4.0
24 W 10 20–33 149–158 631–741 II 2.0–4.0
25 W 9 25–29 157–164 765–810 II 3.2–3.5
26 W 10 20–32 141–153 563–1069 II–III 2.5–3.7
27 W 10 24–37 146–160 631–1284 II 2.4–4.0
28 W 10 22–34 138–155 1051–1509 II–III 2.2–4.4
29 W 10 26–33 137–165 1307–1449 II–III 3.0–4.2
30 W 10 24–41 142–157 1538–1604 II–III 2.9–3.9
31 W 10 27–30 136–161 1617–1828 II–III 3.0–3.9
32 W 9 20–33 141–161 1551–2464 II–III 3.0–4.5
33 W 10 23–35 149–151 2052–2201 III 2.6–3.5
34 W 15 20–27 138–160 2052–2706 II–III 2.8–5.2
35 W 22 23–30 120–140 2298–2810 II–III 3.1–4.2
36 W 32 17–32 123–144 2341–2700 III 2.9–3.9
37 W 49 20–35 120–150 2582–3203 III 2.8–4.0
38 W 49 19–36 124–147 2893–3320 III 3.0–4.1
39 W 30 22–34 125–148 2730–3429 III 3.1–4.3
40 W 22 23–37 130–149 2930–3481 III 3.3–4.5
  1. Patient demographics where maternal age, FHR, EFW, and placental grade and thickness are noted