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An increasing proportion of pregnant women have their labors induced due to changing guidelines. In correlation with this increase, the population of the induced women has changed toward more women with a low-risk pregnancy. Traditionally, induction of labor has taken place in an inpatient setting where the women have spent extra days in hospital before delivery.
Oral prostaglandins, such as misoprostol, is one of the most commonly used induction agent and is easy for the pregnant women to administrate. The pharmacological effect is ripening the cervix and compared to the mechanical cervical ripening, with a balloon catheter, the demands on busy maternity services seems reduced. Before contractions start, the risk of adverse effects on mother or fetus is considered low, but the evidence on use of misoprostol in an outpatient setting is sparse.
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The implementation of induction of labor in outpatient settings is increasing despite insufficient evidence regarding safety and effectiveness. The use of a balloon catheter in an outpatient setting is not associated with adverse outcomes in a low-risk population. There is also evidence that outpatient vs inpatient induction of labor with balloon catheter is equally effective. Examination of vaginal dinoprostone (prostaglandin E2) is found to be efficacious in outpatient settings. However, strong evidence concludes that the oral route of administration of prostaglandin is preferable when inducing labor. The World Health Organization recommend 25ug misoprostol (prostaglandin E1) orally every 2 hour until contractions start for induction of labor.
The women randomized to an inpatient setting will receive the hospital standard follow-up; oral misoprostol 25ug every two hours and a cardiotocography for fetal monitoring every 4-6 hour until start of contractions for two days.
The women randomized to an outpatient setting will receive one oral misoprostol 25ug at the maternity unit. After two hours, provided a normal cardiotocography and no contractions, they can go home. They will continue to take 25ug misoprostol every two hours until start of contractions or increasing pain. Maximum time spent at home will be 48 hours.
A dedicated midwife on call will always be available for questions. The women will receive oral and written information to return to the maternity unit if the water breaks, if they experience increasing pain or bleeding, if they feel insecure or anxious, if there are reduced or no fetal movements, and/or when the contraction starts. When the woman returns, she will stay admitted until delivery.
All women will be given standard of care and fetal surveillance when admitted to the hospital, when the contractions start or if the contractions are still absent after 48 hours. We will also ask eligible women who refrain to participate about their reasons for non-participation.
PRIMARY RESEARCH QUESTION We aim to explore that induction of labor using oral misoprostol appears feasible in an outpatient setting and may positively influence the length of the hospital stay and maternal satisfaction.
PRIMARY RESEARCH PLAN This is a pilot study to explore the feasibility of a possible multicenter randomized controlled trail.
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20 participants in 2 patient groups
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Data sourced from clinicaltrials.gov
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