Oral Titrated Misoprostol for Induction of Labour

2014-08-27 03:18:46 | BioPortfolio


The purpose of this study is to compare effectiveness and safety of an oral titrated solution of misoprostol with vaginal misoprostol for induction of labour with an alive fetus.


Several methods for induction of labour are available. However, the most effective and with less frequency of adverse effects is still unknown. Vaginal misoprostol has been used frequently to induce labour but other routes of administrations have been proposed, such as oral, sublingual and, more recently, oral titrated solution. The purpose of this study is to compare effectiveness and safety of this oral misoprostol titrated solution with vaginal misoprostol administration for induction of labour with an alive fetus. A randomized controlled double-blind trial will be carried in three hospitals: Instituto de Medicina Integral Prof. Fernando Figueira, Universidade Federal do Ceará and Instituto de Saúde Elpídio de Almeida, from November 2009 to November 2011. A total of 400 patients must be enrolled. Inclusion criteria are: a) indication for labour induction; b) term pregnancy with alive fetus; Bishop score less than six. Exclusion criteria are: a) age less than 18 years; b) previous uterine scar; c) nonvertex presentation; d) non-reassuring fetal status; e) fetal anomalies; f) fetal growth restriction; g) genital bleeding; h) tumors, malformations and/or ulcers of vulva, perineum or vagina. They will be randomized to receive an oral misoprostol titrated solution with vaginal placebo tablet or oral placebo solution with vaginal misoprostol tablet. Oral solution will have misoprostol at a concentration of 2mcg/ml or placebo. Vaginal tablets will have 25mcg of misoprostol or placebo. Oral solution dose will be 20mcg/hour (misoprostol) or 10ml/hour (placebo) in the first six hours with an increase of 20mcg/hour (10ml/hour) of misoprostol or placebo each six hours if labour does not start, until the maximum dose of 80mcg/hour or 40ml/hour in the first 24 hours. This maximum dose can be maintained for more 24 hours if needed. Vaginal misoprostol or placebo tablets will be administered for each six hours until the maximum dose of 200mcg or eight tablets. Primary outcomes will be vaginal delivery within 24 hours, hyperstimulation syndrome, cesarean section, severe neonatal morbidity or perinatal death, serious maternal morbidity or maternal death. Secondary outcomes will be need of oxytocin for augmentation of labour, number of misoprostol doses needed to bring on labour, interval from first dose to labour and first dose to delivery, failed induction, tachysystole, uterine rupture, need of labour analgesia, instrumental delivery, side effects, maternal death, meconium, non-reassuring fetal heart rate, Apgar scores less than seven at 1st and 5th minutes, admission at neonatal intensive care unit, neonatal encephalopaty, perinatal death and women not satisfied.

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment


Labor, Induced


Misoprostol, Misoprostol


Instituto de Medicina Integral Professor Fernando Figueira (IMIP)


Not yet recruiting


Instituto Materno Infantil Prof. Fernando Figueira

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:18:46-0400

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Medical and Biotech [MESH] Definitions

Artificially induced UTERINE CONTRACTION. Generally, LABOR, OBSTETRIC is induced with the intent to cause delivery of the fetus and termination of pregnancy.

A synthetic analog of natural prostaglandin E1. It produces a dose-related inhibition of gastric acid and pepsin secretion, and enhances mucosal resistance to injury. It is an effective anti-ulcer agent and also has oxytocic properties.

The repetitive uterine contraction during childbirth which is associated with the progressive dilation of the uterine cervix (CERVIX UTERI). Successful labor results in the expulsion of the FETUS and PLACENTA. Obstetric labor can be spontaneous or induced (LABOR, INDUCED).

A change in the CERVIX UTERI with respect to its readiness to relax. The cervix normally becomes softer, more flexible, more distensible, and shorter in the final weeks of PREGNANCY. These cervical changes can also be chemically induced (LABOR, INDUCED).

The beginning of true OBSTETRIC LABOR which is characterized by the cyclic uterine contractions of increasing frequency, duration, and strength causing CERVICAL DILATATION to begin (LABOR STAGE, FIRST ).

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