Table 1 Expected time intervals from cm to cm presented in hours and minutes (50 percentile and 95 percentile) according to Zhang et al. [24]
Dilation of the cervix | 50 percentilea | 95 percentilea (dystocia) |
|---|---|---|
From 4 to 5 cm | 1 h / 15 min | 6 h / 30 min |
From 5 to 6 cm | 45 min | 3 h / 15 min |
From 6 to 7 cm | 30 min | 2 h / 15 min |
From 7 to 8 cm | 30 min | 1 h / 30 min |
From 8 to 9 cm | 30 min | 1 h / 30 min |
From 9 to 10 cm | 30 min | 1 h / 45 min |
2. stage without EDAa Expulsion phase max 60 min. | 30 min | 2 h / 45 min |
2. stage with EDA Expulsion phase max 60 min. | 1 h | 3 h / 30 min |
Total time without EDA | 4 h / 30 min | 19 h / 30 min |
Total time with EDA | 5 h | 20 h / 15 min |