Cardioversion

What is a Cardioversion?

If you have an irregular heartbeat (arrhythmia), a cardioversion may help restore your heartbeat to a normal rhythm. In this short procedure, a controlled electric shock is used to help your heart beat normally again.

Why do I need a Cardioversion?

Arrhythmias are problems in your heart’s electrical system which cause the heart to beat too fast or ‘quiver’. This can make you feel unwell and lead to serious health risks (eg stroke) because the blood is not pumping around the body as well as it should.

While arrhythmias are often treated with medication, cardioversion may be recommended if you have atrial fibrillation, an abnormal rhythm in the upper chambers of your heart (the atria).

What is involved in a Cardioversion procedure?

A cardioversion is performed in hospital and we’ll give you information about fasting and any medications when you book your procedure.  

Before the procedure, sticky pads will be placed on your chest, arms and back (men may need to be shaved) and you’ll be connected to a machine to monitor your heart rhythm. You’ll be given a general anaesthetic to make you sleep and you’ll stay asleep the whole time.

While you sleep, we will send low-energy electric currents to your heart using a defibrillator machine to make it beat normally again. The procedure itself only takes a few minutes, however, you’ll stay with us for several hours afterwards so we can monitor your heart closely.

What are the risks of a Cardioversion procedure?

There are risks with any surgical procedure but cardioversion is generally regarded as safe. You may need to take medication before your procedure to help prevent blood clotting as there is a small risk of blood clots traveling from your heart to your body. Some people have allergic reactions to the sticky pads placed on the chest. Dr Young Yu will discuss all the risks beforehand to ensure you’re comfortable with the procedure.

What will my recovery be like after a Cardioversion?

After your procedure, you’ll be monitored closely by our team to see how your heart has responded to the treatment. You should be able to go home the same day and return to normal activities within a few days.