This is the only method used for outpatient induction of labour. This is because it has minimal side effects and does not need you to be monitored as closely as when we use medicinal methods (prostaglandin tablets).
The procedure involves inserting a balloon catheter (a soft tube with a balloon on it) through the cervix (neck of the womb). It is usually inserted with the mother lying on her back with her legs up for a short time. A sterile instrument is put into the vagina, so the neck of the womb can be seen and cleaned with an antiseptic. The catheter (a thin soft rubber tube) is then inserted and the balloon is filled with sterile water.
The balloon stays in place for 24 hours and gently presses on your cervix to help it soften and open. The end of the catheter is loosely taped to your inner thigh. The aim of the balloon is to release your natural hormones that will soften and open the cervix ready to have your waters broken. The balloon sometimes softens the cervix and causes labour to start. The balloon is left in place for up to 24 hours. You will be monitored after the procedure for half an hour. If all is normal you will be able to return home while you are waiting for your labour to start with the balloon in place. Prior to going home, the midwife / doctor will explain how to contact the hospital and when to return.
You will be given an appointment for follow up 24 hours later for removal of the balloon / review if the balloon has fallen out by itself.
What are the benefits?
The studies on balloon induction have been reviewed by NICE (a body that recommends treatments to the NHS). The evidence showed balloon catheter induction is safe and works well. Balloons are especially recommended in women who may have more risks from the hormone methods e.g. women who have had 4 or more babies / women who have had previous caesareans.
Generally, they showed the following benefits:
- softening of the cervix in 96 out of 100 people
- no increase in, or fewer, caesarean births
- spontaneous vaginal birth within 24 hours in 69 of 100 people
- a positive birth experience in almost 90 of 100 people
- less pain than with hormone tablets / gel
Are there any complications / risks?
The studies showed that the risks of a balloon catheter included:
- excessive contractions of the uterus in 5 of 100 people, but this was much less than with the hormone tablets / gel (17 of 100 people)
- concerns about baby’s heart rate in 2 out of 100 of babies, but this was much less than with the hormone tablets / gel (15 out of 100 babies)
- the procedure can be mildly uncomfortable but should not be painful
- there is a very small risk of infection but no higher than with the hormone medicines
Please ask your health professional to explain anything you don’t understand.
What can I do at home and when should I contact the hospital?
During the time you are at home you can do things as you normally would e.g. showering, bathing, walking. However please avoid having sex.
We will give you some disposable thermometers to check your temperature with at home every 4 hours. If your temperature is 37.5 degrees or above you should telephone us and return to hospital.
You should contact the hospital if you have any of the following:
- painful tightenings / contractions / severe pain
- bleeding
- your waters break (membrane rupture) - if this happens you should ring to have the balloon removed
- concerns about your baby’s movements
- the balloon falls out - if this happens you can dispose of the balloon at home
- you require pain relief
- you have any worries / feel unwell / feel as though you have a temperature
When should I return to hospital?
If you ring the hospital with concerns the midwife will advise you to return.
When you return a doctor/ midwife will monitor you and your baby and assess whether it is possible to break the waters around the baby. If your waters can be broken and all is well but we are unable to proceed with your induction at that time you may be able to go home and wait for a telephone call from the Labour Ward to return at a later time for this. This can be at any time of day/night depending on availability.
If the cervix is not ready, then we will discuss with you further options which may involve a hormone tablet or if this is not advised then a doctor will discuss further options with you.
How do I contact the hospital?
Ring the Wharncliffe Ward on 01709 424348 or Labour Ward 01709 424491.
What are the alternatives to outpatient induction of labour?
The alternative is inpatient induction of labour.