This information is intended for members of the public in UK only.

Are there complications associated with AF?

blood clot stroke information

The main risk associated with AF is stroke. As the blood is not being properly pumped away from the heart, it may collect or ‘pool’ and a clot could develop in the heart. If the clot leaves the heart and enters the small blood vessels of the brain, the flow of blood may block and result in a stroke.

People with AF are more likely to have a stroke compared with people who do not have AF.

If your atrial fibrillation is not well controlled, it may start to weaken your heart. In extreme cases, it can lead to heart failure where your heart cannot pump blood around your body efficiently.

Reference information

This section contains reference information only, is general in nature and intended to provide a general overview of atrial fibrillation for the general public in the UK. It is not intended to replace in any way the opinion of a healthcare professional. For specific information about this pathology and/or detection, diagnosis, prognosis, administration and, where applicable, appropriate treatment for each specific case, please promptly consult a healthcare professional. The use of this website is subject to the legal notice, the privacy and cookie policy, and the applicable laws and regulations.