Melatonin supplementation effect on the Induction of labour rates in first-time MothErs: The MyTIME Trial
A double-blind, randomised, placebo-controlled trial to evaluate the effect of oral Melatonin administered to nulliparous women at 39 weeks' gestation, on the rate of induction of labour.
Curtin University
530 participants
Jan 25, 2024
Interventional
Conditions
Summary
Problem: In the last 10 years, rates of induction of labour amongst first-time (nulliparous) mothers have increased by 43%, from 32% to 46%. Situated in the context of soaring medical costs, few significant improvements in perinatal outcomes have been realised in the last decade. Despite escalated investment and medical intervention, rates of stillbirths, neonatal deaths and maternal mortality remain largely unchanged. Conversely, rates of maternal and neonatal morbidity have increased, with rising rates of induction of labour, caesarean section, epidural, episiotomy, postpartum haemorrhage, maternal and neonatal birth trauma and sepsis. Evidence indicates that induction of labour in the absence of medical compromise may increase the risk for iatrogenic harm to the mother and baby. Solution: Melatonin, a hormone released by the pineal gland, is essential for healthy spontaneous labour. Whilst it is naturally produced in the body at night, contemporary environmental impacts such as increased exposure to blue light and shorter sleep periods compete with melatonin production and release. This proposed clinical trial (randomised, double-blind, placebo-controlled trial) will test what would be a high-impact, high-value, low-cost solution aimed at potentiating spontaneous labour and reducing the rates of labour induction. This meets both the requirements for reducing unnecessary interventions while addressing some of the safety concerns about the risks associated with pregnancy extending beyond 41 weeks as outlined below. The aim is to determine if oral supplementation with 3mg melatonin from 39 weeks gestation in nulliparous women will reduce the induction of labour rates. Our unpublished consumer data indicate high acceptability and strong maternal demand for this proposed innovative approach,85% of women surveyed indicated they would be interested in participating if this exact trial were available to them.
Eligibility
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Interventions
The intervention for this trial is 3mg oral melatonin encapsulated tablet. Study participants will be dispensed the trial intervention (3mg oral melatonin encapsulated tablet) tablet. On the first evening of gestation week 39, women will take their first tablet. Participants will be advised to take the trial medication at 2000hrs each evening as this is a time of onset of (relative) darkness coincidental to the natural rise in circulating melatonin levels. Night-time administration will continue each night until labour spontaneously commences or until an alternative intervention for birth is implemented. Administration will occur for a maximum of 3 weeks, if spontaneous labour does not occur within this time women will have an alternative plan for birth implemented. A text message will be sent each evening with a link to record the time of administration, which will build a medication diary database to determine adherence and facilitate analysis of primary and secondary outcomes. A small group of women (n=30) will be asked to participate in a sub-study aimed at measuring and confirming peak melatonin levels after oral dosing. Women will be recruited to the sub-study and consented to provide a blood sample taken approximately 1 hour after dosing (n=15 from each of the placebo and melatonin groups). Blood will be collected by a phlebotomist in the participants’ homes and transported to the laboratory for processing and storage at -80oC. Plasma melatonin concentrations will be determined by liquid chromatography/mass spectrometry according to the method of Wang et al38. The limit of quantitation is 1 pg/ml. Plasma samples will be analysed in a single batch to minimise inter-assay variability. Routine antenatal and intrapartum care will continue; no changes to usual care will be required as a result of participation in this trial.
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ACTRN12623000502639