Ablation

Catheter ablation - British Heart FoundationIf you have an ablation, you're having treatment that aims to try to control or correct your abnormal heart rhythm. It can also be called catheter ablation.

An ablation is done using the same technique as an electrophysiology (EP) study and is sometimes carried out at the same time.

You'll have the procedure under a local anesthetic and with sedation. These will help to ease any discomfort you may feel. The process may take a few hours so it can still be an uncomfortable experience.

Thin, flexible tubes called catheters are placed into one of your veins or arteries, usually in your groin. The catheters are gently moved into the correct position in your heart.

Radiofrequency energy is then used to destroy the affected area inside your heart that's causing the abnormal heart rhythm. This process helps to block the abnormal electrical impulses in this part of your heart.

What happens after the test?

When the ablation is over, the catheters are removed. Sometimes there might be a small amount of bleeding from the groin area when they are taken out. A nurse or doctor will press on the area for a short while to stop any bleeding.

After the procedure, you'll need to stay lying flat on your back and rest for a few hours. Most people who have an ablation stay in hospital overnight. You may feel tired afterwards, but you should feel back to normal within a few days.

Are there any risks to having an ablation?

An ablation does involve a very small amount of risk. This will be explained to you before you give your consent to have the procedure. Your doctor will only recommend that you have this procedure if they think the benefits outweigh the risks.

If there is bleeding, it can sometimes leave a haematoma which means blood has collected under the area of skin where the catheter was inserted. This can feel uncomfortable and may cause bruising around the groin area.

There is a small risk of damage to the heart's normal electrical pathways. If this happens, you may need to be fitted with an artificial pacemaker.

Who can I talk to?

It’s natural to feel worried when you have a new procedure, but it often helps to talk about your feelings with someone close to you or with a healthcare professional. 

You can also call our Heart Helpline on 0300 330 3311 or look at our publications for more information.