TABLE 3.
Statistical Comparison Between Normal and IPD Subjects
| Placental volume (cm3) | PBF (ml/100g/min) | hPBF (ml/100g/min) | Relative hPBF (%) | |||||
|---|---|---|---|---|---|---|---|---|
| 16 Weeks (normalized) | 156.6 ± 53.8 (86.3–232.3) | 132.0 ± 33.4 (85.4–199.3) | 104.9 ± 31.4 (63.3–161.1) | 97.2 ± 25.3 (50.0–132.0) | 278.1 ± 81.8 (164.9–414.8) | 180.7 ± 74.0 (57.1–311.0) | 259.1 ± 64.4 (183.3–340.8) | 183.2 ± 55.1 (100.1–283.6) |
| P-value | 0.08 | 0.53 | <0.001** | <0.001** | ||||
| 20 Weeks (normalized) | 269.7 ± 80.0 (176.4–436.3) | 259.5 ± 87.1 (180.1–466.8) | 111.3 ± 25.9 (78.3–159.4) | 106.6 ± 22.3 (66.7–136.1) | 298.2 ± 90.2 (152.3–428.2) | 256.1 ± 113.5 (38.7–418.3) | 270.8 ± 73.5 (176.8–414.3) | 237.2 ± 95.5 (48.0–364.5) |
| P-value | 0.48 | 0.76 | 0.33 | 0.37 | ||||
| Slope | 56.6 ± 27.0 (20.9–120.1) | 63.7 ± 30.7 (36.2–136.6) | 3.2 ± 12.5 (−19.6–20.8) | 4.7 ± 12.3 (−18.4–28.2) | 10.0 ± 35.2 (−45.2–65.1) | 37.7 ± 69.7 (−127.5–129.3) | 5.9 ± 36.1 (−57.4–58.4) | 27.0 ± 60.0 (−106.8–120.8) |
| P-value | 0.55 | 0.95 | 0.007** | 0.03* | ||||
| Average | 213.1 ± 62.6 (138.5–315.0) | 195.7 ± 58.4 (139.0–330.2) | 108.1 ± 25.9 (73.1–151.2) | 101.9 ± 20.4 (65.5–132.7) | 288.1 ± 78.6 (173.1–406.7) | 218.4 ± 65.7 (118.5–319.8) | 264.9 ± 58.9 (185.7–348.7) | 210.2 ± 49.8 (118.3–288.5) |
| P-value | 0.25 | 0.60 | 0.003** | 0.002** | ||||
Data are means ± standard deviations, with 95% confidence intervals in parentheses. P values were obtained using the unpaired Wilcoxon tests between normal and IPD subjects. IPD = Ischemic Placenta Disease, PBF = Placenta Blood Flow, and hPBF = High Placenta Blood Flow.
*
Statistically significant (P < 0.05).
**
Highly significant (P < 0.01).