Atrial Fibrillation

In atrial fibrillation (AFib), the two upper chambers of the heart (the atria) experience irregular and frequently fast electrical impulses. In atrial fibrillation (AFib), the atria fibrillate, or quiver, instead of contracting in a coordinated and rhythmic manner.
- AFib occurs when the heart's normal electrical conduction is disrupted, causing atrial contractions to occur at abnormal times. Symptoms like palpitations, shortness of breath, weariness, and dizziness can come from a heart rate that is too rapid or too slow.
Because the abnormal heart rhythm can trigger the production of blood clots in the atria, which can then migrate to other regions of the body, including the brain, AFib is associated with an increased risk of consequences, notably stroke. Therefore, people with AFib typically need medical treatment and management to regulate their heart rate, keep it in a regular rhythm, and lessen the likelihood of problems.