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Epidural anaesthetic

3-minute read

This page will give you information about an epidural anaesthetic. If you have any questions, you should ask your GP or other relevant health professional.

What is an epidural anaesthetic?

An epidural anaesthetic (or epidural) involves injecting local anaesthetics and other painkillers into the epidural space (an area near your spinal cord). This numbs your nerves to give pain relief in certain areas of your body. An epidural can be used either on its own while you are awake, or together with sedation or a general anaesthetic. An epidural can also be used after an operation or procedure to give effective pain relief.

How does an epidural work?

A fine catheter (tube) is inserted in the epidural space, near your spinal cord. Local anaesthetics and other painkillers are injected down the catheter into the epidural space to numb your nerves.

The epidural can be maintained by giving extra doses or by giving a continuous low dose (an infusion).

How is an epidural given?

To insert the epidural catheter, your anaesthetist will ask you to either sit up or lie on your side.

Your anaesthetist will insert the epidural catheter using a needle.

Your anaesthetist will inject a small amount of anaesthetic through the catheter to check the position. Once they have completed this check, they will give more of the anaesthetic until the epidural is working properly.

Illustration of different types of epidrual.
Different types of epidural.

The effect of the epidural can be varied by changing the type and amount of medication given. The more anaesthetic you are given, the more numb you will be.

What complications can happen?

There is a risk of significant permanent harm from an epidural.

  • failure of the epidural
  • low blood pressure
  • headache
  • respiratory depression, where your breathing slows down too much
  • itching
  • difficulty passing urine
  • temporary leg weakness
  • backache
  • seizures
  • unexpected high block, if the local anaesthetic spreads beyond the intended area
  • infection around your spine
  • cardiovascular collapse (where your heart stops)
  • nerve damage
  • blood clot around your spine
  • damage to nerves supplying your bladder and bowel
  • paralysis or death

Late complications

A complication may happen after the epidural has been removed.

  • pus, redness, tenderness or pain
  • a high temperature
  • feeling unwell
  • discomfort when in a bright room or sunlight
  • neck stiffness
  • difficulty moving or feeling your legs
  • difficulty passing urine
  • bowel incontinence

How soon will I recover?

An epidural can affect your reactions. Do not drive, operate machinery or do any potentially dangerous activities (this includes cooking) until you have fully recovered feeling, movement and co-ordination.

Summary

An epidural anaesthetic can be used for most people, usually giving a safe and effective form of pain relief both during and after an operation or procedure.

IMPORTANT INFORMATION
The operation and treatment information on this page is published under license by Healthdirect Australia from EIDO Healthcare Australia and is protected by copyright laws. Other than for your personal, non-commercial use, you may not copy, print out, download or otherwise reproduce any of the information. The information should not replace advice that your relevant health professional would give you.

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Last reviewed: September 2019


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