Table 3.
Length of Latent Phase and Morbidities
| Time since start of oxytocin with ruptured membranes |
Number of women in latent phase at start of interval |
Chorio- amnionitis /Endometritis |
3rd or 4th degree perineal laceration * |
Uterine atony |
NICU admission |
NICU admission >48 hours |
Neonatal composite # |
|---|---|---|---|---|---|---|---|
| 0 - <3 hrs | 1347 | 178 (13.2) | 78 (9.2) | 63 (4.7) | 83 (6.2) | 44 (3.3) | 57 (4.2) |
| 3 - <6 hrs | 918 | 146 (15.9) | 55 (10.1) | 52 (5.7) | 55 (6.0) | 31 (3.4) | 40 (4.4) |
| 6 - <9 hrs | 407 | 93 (22.9) | 24 (11.6) | 35 (8.6) | 30 (7.4) | 15 (3.7) | 21 (5.2) |
| 9 - <12 hrs | 161 | 45 (28.0) | 6 (9.4) | 16 (9.9) | 14 (8.7) | 7 (4.3) | 10 (6.2) |
| 12 or more hrs |
71 | 22 (31.0) | 3 (10.7) | 8 (11.3) | 7 (9.9) | 2 (2.8) | 4 (5.6) |
Data are presented as number (percent)
*
Vaginal deliveries only
#
Any of the following: a 5-minute Apgar score below 4, an umbilical artery pH under 7.0, seizures, intubation in the delivery room, stillbirth, neonatal death, or admission to a neonatal intensive care unit for more than 48 hours