Cervical Ripening, Labor, Induced
Conditions
Keywords
Cervical Ripening, Labor, Induced, Balloon Dilation, Oxytocin
Brief summary
Our purpose was to compare the efficacy and safety of Foley catheter with oxytocin and extraamniotic saline infusion with oxytocin for induction of labor requiring cervical ripening.
Detailed description
Induction of labor is indicated when the benefit to either the mother or fetus outweighs that of continuing the pregnancy. Labor induction in the presence of an unripened cervix is associated with prolonged labor, chorioamnionitis, and cesarean delivery. Numerous mechanical and pharmacological methods have been used for cervical ripening. There are limited numbers of rigorous studies comparing the efficacy of the various methods. One of the most common mechanical methods for cervical ripening is placement of a Foley catheter with a 30 cc balloon inside the cervix, with or without the use of oxytocin. The Foley balloon will disrupt the amniotic membrane surface and cause the release of prostaglandin, a natural chemical from the cervix, to facilitate the ripening process. Oxytocin will be used concurrently as the induction agent. Recently, a modification of this method, extraamniotic saline infusion (EASI) has become more popular. The EASI method involves similar procedure including the placement of Foley catheter inside the cervix; in addition, saline solution will be infused through the catheter. This additional step is thought to further facilitate the disruption of amniotic membrane surface. Both methods are safe and become the standard treatment for cervical ripening. However, there are no published trials so far comparing the two methods. The objective of this study is to compare the efficacy and safety of Foley catheter with oxytocin and EASI with oxytocin for induction of labor requiring cervical ripening. The study is designed to be a single masked randomized trial.
Interventions
PROCEDUREFoley catheter only
PROCEDUREExtraamniotic saline infusion
Sponsors
Rush University Medical Center
Study design
Allocation
RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
SINGLE
Eligibility
Sex/Gender
FEMALE
Healthy volunteers
No
Inclusion criteria
* singleton gestation * cephalic vertex presentation * intact membrane * gestational age between 30 and 42 weeks * Bishop score less than or equal to 5
Exclusion criteria
* suspected chorioamnionitis * placenta previa * low lying placenta * unexplained vaginal bleeding * intrauterine fetal demise * HIV * any contraindication to vaginal delivery
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The time interval from placement of Foley catheter to vaginal delivery | — |
Secondary
| Measure | Time frame |
|---|---|
| Cesarean delivery rate | — |
| Incidence of maternal complications | — |
| Incidence of neonatal complications | — |
Countries
United States
Outcome results
None listed