Atrial Fibrillation (AFib) is a form of arrhythmia – when your heart beats out of rhythm. When this occurs the Atria (upper chambers of the heart) do not pump in the usual way, this may cause blood to pool and clot. A stroke can occur when a part of the clot can break off and travel up the bloodstream and lodges in the brain.
The causes of Atrial Fibrillation are often unclear, and a lot of patients never identify any underlying cause. However, there are some risk factors which increase your likelihood of developing AFib, including: