INDUCTION OF LABOUR – AUGUST 2018 PAGE 1 OF 3
Sometimes it is necessary to help a woman to start her labour using artificial methods.
This is called induction of labour.
What is an induction of labour?
In most pregnancies, labour starts naturally between
37 and 42 weeks, leading to the birth of a baby. Labour
is ‘induced’ when doctors and midwives encourage the
process of labour to start artificially.
Why is induction recommended?
The most common reasons for induction of labour are
the:
•
pregnancy ha
s gone longer than 41 weeks
•
waters have broken but the contractions of labour
have not started naturally
•
baby is not well or is not growing well
•
mother has specific health issues.
Are there any risks?
There are risks associated with induction. Some women
do not want to be induced and will choose to ‘wait and
see’ whether natural labour will start.
There are also risks associated with continuing your
pregnancy when an induction has been recommended.
Before you make a decision, your doctor or midwife will
explain the risks of having or not having an induction.
How is labour induced?
There are four different ways that labour is induced:
•
prostaglandin
•
a balloon catheter
•
artificially breaking the waters
•
oxytocin.
Most women need a mixture of these before they have
their baby.
INDUCTION OF LABOUR
What happens on the day of the induction?
A decision may be made to change your method of
induction on the day of your induction. After a vaginal
examination, changes to your cervix may mean that
another method of induction is more appropriate. Your
doctor or midwife will discuss this with you.
How long will it take?
Once the induction has started, you will be monitored
regularly. You can walk around but you must not leave
the hospital. Your cervix is assessed regularly to check
its progress. Induction is not a quick process. Once it
has started, it may take more than 24 hours until your
baby is born. If your cervix needs to be primed, it may
take two days or more.
Can you change your mind after induction has
started?
Once induction has commenced, it is expected to
continue until your baby is born. We do not
recommend stopping the induction process.
Will it be more painful than natural labour?
Every labour is different. For some women an induced
labour is more painful than a labour that starts on its own,
however this is not true for all women. Epidurals are
usually available if needed.
Will it work?
Sometimes induction does not work and you may not
go into labour. If this happens and all safe options have
been tried, you may need a caesarean.
Watch our short video about induction of labour at
https://www.thewomens.org.au/hi-iol
INDUCTION OF LABOUR – AUGUST 2018 PAGE 2 OF 3
Methods of induction
The method of induction you need will depend on how
ready your cervix (the neck of your womb) is for labour
to begin. Your doctor or midwife will do a vaginal
examination to check your cervix and then discuss
which method is most appropriate for you.
If your cervix is not ready for labour, you may need
‘priming’. Priming helps to prepare your cervix for labour
and can be done by using either a balloon catheter or
prostaglandin.
These methods help to prepare your cervix for labour
but do not usually make labour start.
Priming can take from 6 to 48 hours. Once your cervix
is open, you may need:
•
your waters to be broken and
•
oxytocin, a medication that commence
s
contractions.
You
will most likely have both of these before going into
labour and having your baby.
Prostaglandin
Prostaglandin is a gel or tablet that is inserted into your
vagina to soften the cervix and help prepare it for the
next stage of labour.
When prostaglandin is in place, you will need to lie
down for at least 30 minutes and remain in the hospital
usually until labour begins.
Things you should be aware of
•
Prostaglandin sometimes causes vaginal soreness.
•
A small number of women experience some
reactions such as nausea, vomiting or diarrhoea.
•
Very occasionally, prostaglandin can cause the
uterus (womb) to contract too much. If this happens,
you will be given medication to relax the uterus.
•
Most women will need further help to go into labour.
Balloon catheter
A thin tube called a catheter, with a balloon on the end
is inserted into your cervix and the balloon is then
inflated with water. This is called a balloon catheter and
is used to apply pressure to your cervix. It helps to open
it, preparing it for the next phase of labour.
The catheter is left in place for up to 12 hours then,
after the water is taken out from the balloon, the
catheter is removed. You can move around normally
while it is in place.
After the catheter is removed, you will have another
vaginal examination to determine the next steps.
Things you should be aware of
•
Most women will require further assistance to go into
labour.
Artificial Rupture of Membranes (ARM)
This procedure is commonly known as breaking your
waters.
Once the cervix is open enough, your doctor or midwife
will use a small instrument with a hook on the end to
break your waters. This will not hurt but the examination
can be uncomfortable. Your waters will continue to run
out in small amounts throughout your labour.
Things you should be aware of
•
Although breaking your waters is usually
straightforward, it can increase the risk of cord
pro
lapse, bleeding and infection. Your doctor or
midwife will take care to avoid this but are trained to
deal with any emergency that might happen.
•
It is rare for labour to start just by breaking your
waters. It is best to start using oxytocin soon after
your waters are broken.
Oxytocin
This medication is the same hormone that makes you
go into labour naturally. A needle is placed into a vein
and attached to a drip containing oxytocin.
A pump controls the amount of oxytocin medication you
are given. Your midwife will turn up the drip every half
hour until you are in labour. The length of time this
takes differs for each woman but it can take several
hours.
A midwife will usually stay with you while the drip is
running. Your baby’s heart rate will be monitored
throughout labour using a CTG machine.
Things you should be aware of
•
Your ability to move around will be limited by the drip
and CTG machine.
•
Very
occasionally, oxytocin can cause the uterus to
contract too much. If this happens, you will be asked
to lie on your left side and the drip will be adjusted or
stopped. Another drug may be given to reduce the
contractions. This may be done if there are concerns
about your baby’s heartbeat. Our doctors and
mi
d
wives are trained to deal with these issues.
•
If your induction is with oxytocin, you will be unable
to have a water birth
INDUCTION OF LABOUR – AUGUST 2018 PAGE 3 OF 3
IF YOU ARE HAVING AN
INDUCTION
AT THE WOMEN’S
On the day of your induction
Please arrive at the confirmed time.
•
If you are late, your induction may be
postponed.
•
Arriving early does not mean that you will be
seen earlier.
After your admission to hospital, your doctor or
midwife will:
•
do a vaginal examination to assess your cervix
•
check your baby’s position
•
use a monitor to track your baby’s heart.
A vaginal examination will help your doctor or
midwife to decide how ready your cervix is for
labour to begin. They will then discuss with you
which method of induction is most appropriate.
Your induction will usually start within an hour of
admission, however this may be delayed or
rescheduled if the hospital is extremely busy.
While we understand that you may find the delay
upsetting, we want to give you and your baby the
best care that we can and will not start your
induction if no one is available to look after you
properly. We will keep you informed and do our
best to make the delay as short as possible
.
DISCLAIMER This factsheet provides general information only. For specific advice about your baby or your healthcare needs, you should seek advice from your health
professional. The Royal Women’s Hospital does not accept any responsibility for loss or damage arising from your reliance on this factsheet instead of seeing a health
professional. If you or your baby require urgent medical attention, please contact your nearest emergency department. © The Royal Women’s Hospital 2018
Time and date of your induction
Date:
Time to arrive:
Where to go:
Proposed induction method:
We will call you to confirm your date and time.
Sometimes we may need to reschedule these.
Contact us
To speak to a midwife about your induction of labour
•
Parkville: (03) 8345 2170
Monday – Friday (8.30am – 4.30pm)
•
Sandringham: (03) 9076 1245
Monday – Sunday (24 hrs)
