Atrial fibrillation is a form of irregular heart rate, or arrhythmia. Atrial fibrillation occurs when one or both of the upper chambers of the heart, the atria, quiver or ‘fibrillate’ rather than beat normally.
It’s important to recognise and treat atrial fibrillation to help prevent serious complications like stroke and heart failure.
Symptoms of atrial fibrillation
Some people with atrial fibrillation have no symptoms. Others have:
- heart palpitations or ‘fluttering’ heartbeat
- an irregular pulse
- dizziness or fainting spells
- weakness or tiredness
Atrial fibrillation can occur as a one-off episode, or can come and go, or can persist.
Atrial fibrillation diagnosis
Atrial fibrillation is usually diagnosed using an electrocardiogram, or ECG. If you have atrial fibrillation, then your doctor will talk to you and examine you, and may order some other tests such as a 24 hour heart monitor (called a holter monitor) or an echocardiogram (heart ultrasound).
Atrial fibrillation treatments
Treatments for atrial fibrillation include:
- medicines to make your heart beat normally again
- procedures to make your heart beat normally again
- medicines to slow your heart rate
If you have atrial fibrillation, you are at a higher than normal risk of having a clot form in your heart. If this breaks off, it can cause a stroke.
So some people with atrial fibrillation are advised to take medicines to reduce the risk of clotting so as to reduce the risk of a stroke.
Long-term management of atrial fibrillation
Most people are able to manage their atrial fibrillation and lead a relatively normal life. To look after your heart, it’s important to take medications as prescribed, eat healthily, stay physically active, avoid smoking, look after your general health, and visit your doctor regularly.
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Last reviewed: February 2019