The Association between Early Artificial Amniotomy and Chorioamnionitis in Nulliparous Induction of Labor
Table 2
Association between amniotomy exposure and maternal outcomes.
Outcome
Early amniotomy
Late amniotomy
value*
= 398
= 1,169
Chorioamnionitis, (%)
40 (10.2)
149 (13.2)
0.12
Rates of chorioamnionitis based on mode of delivery, (%)
Vaginal delivery
20 (8.4)
117 (14.6)
0.01
Cesarean section
20 (12.7)
32 (9.7)
0.30
Mode of delivery, (%)
Cesarean section
160 (40.2)
345 (29.5)
<0.001
Operative vaginal delivery
31 (7.8)
117 (10.0)
0.19
Time to vaginal delivery, minutes
329 (216–493)
472 (313–700)
<0.001
Fetal weight (gms)
Vaginal delivery
3172 (2828–3444)
3192 (2828–3528)
0.33
Cesarean section
3332 (2856–3696)
3444 (3065–3752)
0.02
Endometritis, (%)
9 (2.3)
11 (0.9)
0.04
Cord prolapse, (%)
1 (0.3)
2 (0.2)
0.56
Neonatal 5-minute APGARs
9 (9-9)
9 (9-9)
0.13
Admission to intensive care nursery, (%)
57 (14.3)
166 (14.2)
0.95
Categorical data analyzed with chi-square tests and data reported as (%). Continuous data analyzed with nonparametric comparison of medians and reported as median (interquartile range).
