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Clinical Trial Summary

The goal of this randomized controlled trial is to examine the efficacy of combining castor oil ingestion with extra-amniotic single balloon catheter for cervical ripening on time from induction to delivery in nulliparous women. The main question it aims to answer are: Does the addition of the use of castor oil to extra-amniotic single balloon reduce the time until birth? Does the addition of the castor oil affect other perinatal outcomes during childbirth? Are the side effects of the castor tolerated by the mothers? Participants will be randomly divided into 2 groups: the study group will drink a mixture of 60 ml of castor oil mixed with 140 ml of orange juice. Thirty minutes later, an extra-amniotic single balloon catheter will be inserted above the internal cervical os and filled with 60 mL of normal saline. In the control group, a foley catheter will be inserted into cervical canal without ingestion of castor oil.


Clinical Trial Description

The rate of labor induction has increased up to 25.7% in 2018 for several demographic and obstetric reasons. In nulliparous women the reported rate is nearly 32%. Various methods are used to induce labor worldwide, including natural, mechanical and pharmacological agents. of all methods balloon catheters were proven to cause fewer adverse perinatal events. Though induction is considered a safe and effective procedure, it may lead to a prolonged labor which is associated with complications such postpartum hemorrhage, infection, and operative delivery. Based on these data several studies have examined the combinations of balloon catheters with other pharmacological agents on labor durations. The results were inconsistent, and several reports showed that the combination reduced significantly the length of labor. Nevertheless, pharmacological agents may be associated with adverse events including uterine hyperstimulation, placental abruption, and postpartum hemorrhage, though the overall risk is small. Castor oil, extracted from the seeds of Ricinus communis plant, is a natural effective substance for induction of labor. it's considered a safe and inexpensive though the exact mechanism by which it induces labor is still unclear. Our hypothesis suggests that ingestion of castor oil combined with the balloon catheter will shorten the time to delivery. In order to show a reduction by 3 hours, a sample size of 57 in each group will be needed assuming 80% power and a two-tailed alpha of 5%. Since the success rate of vaginal delivery is nearly 85%, the sample size was calculated to 67 women in each group. Additional 5% are planned to be recruited to account for trial drop out for any reason, yielding a total final sample size of 71 women in each group (142 in both groups). ;


Study Design


Related Conditions & MeSH terms

  • Induction of Labor Affected Fetus / Newborn

NCT number NCT06325007
Study type Interventional
Source Holy Family Hospital, Nazareth, Israel
Contact Raed Salim, MD
Phone +972544986960
Email r.salim@hfhosp.org
Status Recruiting
Phase N/A
Start date April 11, 2024
Completion date December 31, 2024

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