Atrial fibrillation (AFib) is a type of abnormal heart rhythm which can increase the chance of blood clots, stroke or heart attack. During atrial fibrillation, the upper chambers of the heart (the atria) beat irregularly and (usually) fast – causing them to quiver instead of beating normally. This results in the blood not being pumped around the body as efficiently.
Women tend to develop Afib at an older age compared to men. Women on average, are four years older than men when they develop atrial fibrillation.