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Opinion_

5 ways to reduce the risk of stillbirth

11 December 2018
Up to 50 percent of stillbirths happen unexpectedly and a clear cause is never identified, writes Professor Jonathan Morris and Dr Adrienne Gordon from the University of Sydney.

Six Australian babies are stillborn each day. This equates to more than 2,000 babies each year.

Stillbirth is defined as theÌýÌýof at least 20 weeks’ gestation or 400 grams in weight. Most stillbirths occur during pregnancy.

There’s been a reduction over the past 20 years of baby deaths within the first four weeks of life. But stillbirth rates have not declined. TheÌýÌýof 7.1 per 1,000 births puts AustraliaÌýÌýfor stillbirth.

The rate of late gestation stillbirths (after 28 weeks) in Australia of 2.7 per 1,000 births is aroundÌýÌýthan top performing countries worldwide, such as the Netherlands, Finland and Denmark, which have rates of 1.8, 1.8 and 1.7 per 1,000 respectively. And the rates of stillbirth for Aboriginal and Torres Strait Islander and disadvantaged women ²¹°ù±ðÌýÌýthat of non-Indigenous Australians.

Up to 50 percent of stillbirths happen unexpectedly and a clear cause is never identified. In around one-third,ÌýÌýin pregnancy and labour are known to play a part.

This week, a Senate ReportÌýÌýto reducethe rates of stillbirth in Australia targetting a 20 percent reduction in the stillbirth rate within three years.

We can achieve this aim by focusing on five evidence-based practices for women and health providers:

1. Sleep on your side in the last trimester

The position pregnant women sleep in has recently emerged as an important risk factor for stillbirth. Women who report going to sleep on their back after 28 weeks of pregnancy have an almostÌý.

It’s recommended women after 28 weeks of pregnancy settle to sleep on their side although not all women are aware of this advice. A public awareness campaign on maternal sleep position will be launched in Australia early in 2019. This is based on those in the United Kingdom and New Zealand.

2. Seek help if fetal movements decrease

Women who experience decreased or altered fetal movement should immediately contact their midwife or doctor, as this is a marker for potential problems with the baby, including poor growth, disability and stillbirth.

But women are often not aware of this risk factor and, as such, don’t immediately report decreased fetal movement. AÌýÌýon decreased fetal movement wasÌýÌýin Victoria.

We are currently testing a mobile phone app for women to track fetal movement. Our preliminary data shows around 20 percent of women report concerns about decreased fetal movement during their pregnancy. Of these, around one-third will wait longer than 24 hours to contact their health care provider.

The response by care providers to maternal reporting of decreased fetal movement isÌýÌýas it should be.

3. Get help to stop smoking

Smoking during pregnancy is strongly associated with stillbirth and other serious problems such as fetal growth restriction, premature birth, and SIDS. It impacts on the child’s health throughout his or her life.

Ìýduring pregnancy, and rates are higher for women under 20 years (31 percent), who live remotely (35 percent) or are Indigenous (42 percent).

Quitting smoking hasÌýÌýfor women and their babies, but the rate of quitting in pregnancy isÌý.

4. Attend check-ups to monitor baby’s growth

Fetal growth restriction – when the baby isn’t growing well – is a strong marker of potential problems with the baby, including stillbirth, death in the first weeks of life and also chronic diseases later in life.

Good antenatal detection, combined with careful management,ÌýÌýof being born healthy.

But Australian midwives and doctors are often poor at detected fetal growth restriction; we only identifyÌýÌýof babies who have it.

We have developed aÌý, through improved screening and management of women at risk. So far this has been well-received.

We hope to see similar improvements to that of the UK’sÌý, which increased the detection of babies with growth restriction from 34 percent to 54 percent.

5. Optimise birth timing, if possible

The risk of stillbirth increases as women approach and go past their due date, as the placental function decreases.

The absolute risk of stillbirth from being overdue is very low, affecting about one in 1,000 women. But women inÌýÌýshould be more closely monitored for their risk of stillbirth and, if necessary, have their labour induced. This includes women who:

  • ²¹°ù±ðÌýÌýthan 35 years
  • smoke
  • are overweight or obese
  • have pre-existing diabetes
  • are having their first baby
  • have had a previous stillbirth
  • are Indigenous or from other disadvantaged groups
  • ³ó²¹±¹±ðÌý.

However, the benefit of reducing the risk of stillbirth via an early birth needs to be carefully weighed against the risk of intervention for the baby at a given gestation.

We’ve long known that preterm babies have poorer outcomes than those born at term. It’s becomingÌýÌýbirth at 37-38 weeks’ gestation is alsoÌýÌýof disease, developmental problems and early death.

Obstetric interventions, such as caesarean section, alsoÌýÌýof infection and blood loss for the mother. The aim is to reduce stillbirths for women at or near the end of the pregnancy, while not increasing unnecessary intervention.

Education to improve risk assessment and monitoring are under development, as are measures to assist women and their care providers to jointly assess the risks and benefits of inducing labour.

While the Senate report highlighted need for further research to better understand and predict who is at highest risk of stillbirth, with what is already known, we can substantially reduce the numbers of stillborn babies and families who suffer the tragedy of this loss.

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This article was first published on and written by and from University of Sydney and co-authors.

Kobi Print

Media and PR Adviser (Medicine & Health)

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