Table 5.
Time frames of the fetal heart rate tracing analysis
| Variable | All | Groups | P value | ||
|---|---|---|---|---|---|
| MR 0 | MR 1–2 | MR 3–4 | |||
| n=87 | n=13 | n=23 | n=51 | ||
| Time IEV-to-amniocentesis, hours‡ | 3.4 [1.0–8.7] | 2.5 [1.2–5.4] | 2.6 [0–8.6] | 3.7 [1.5–10.5] | 0.365 |
| Time IEV-to-delivery, hours‡ | 17.2 [8.1–30.1] | 19.4 [7.5–33.2] | 21.9 [11.3–34.8] | 15.9 [7.5–27.0] | 0.430 |
| Time IEV-to-AEV, hours‡ | 3.1 [1.0–8.9] | 3.4 [1.3–5.4] | 2.4 [0.0–8.0] | 3.0 [1.5–10.5] | 0.479 |
| Time AEV-to-amniocentesis *, min‡ | 19 [0–53] | 46 [4–65] | 11 [0–68] | 15 [0–40] | 0.332 |
| Time AEV-to-delivery, hours‡ | 10.0 [4.0–19.7] | 16.2 [7.0–28.7] | 16.2 [5.1–28.9] | 8.3 [3.3–14.8] | 0.057 |
| Time AEV-to-DEV, hours‡ | 9.9 [2.8–19.6] | 16.2 [6.8–24.0] | 15.8 [5.0–28.0] | 6.4 [2.2–14.3] | 0.042 |
| Time IEV-to-DEV, hours‡ | 16.8 [6.8–29.3] | 18.0 [7.2–28.6] | 20.7 [10.3–34.2] | 14.2 [5.6–25.7] | 0.305 |
| Time DEV-to-delivery, min‡ | 39 [8–65] | 19 [0–59] | 38 [4–59] | 51 [9–85] | 0.345 |
‡
Data presented as median [interquartile range] and analyzed by Kruskal-Wallis ANOVA among the 3 groups.
*
Time relative to amniocentesis in absolute value (i.e. irrespective if earlier or later); MR: mass restricted score; (IEV): initial evaluation; (AEV): time of amniocentesis; (DEV): delivery evaluation.