Atrial fibrillation (often called AFib or AF) is an abnormal heart rhythm (arrhythmia) where the heart's upper chambers (atria) beat rapidly and irregularly instead of in a regular, steady rhythm. This irregular beating disrupts the normal heart function, causing the atria to quiver or fibrillate instead of contracting properly. Because of this, the heart does not pump blood efficiently. AFib can occur as short episodes or become a persistent condition. Some people may have no symptoms, while others experience heart palpitations, dizziness, shortness of breath, fatigue, or fainting. It increases the risk of serious complications like stroke, heart failure, and dementia because the irregular atrial contractions can lead to blood pooling and clot formation, which can travel to the brain causing a stroke. Risk factors for AFib include aging (particularly over 65 years), high blood pressure, heart disease, obesity, diabetes, thyroid problems, lung diseases, family history, certain lifestyle choices (like heavy alcohol use or drug use), and after surgery. Treatments focus on controlling the heart rhythm or rate, preventing clots with blood thinners, and sometimes procedures like ablation to restore normal rhythm. In summary, AFib is a common and serious heart rhythm disorder that requires medical attention to manage symptoms and reduce risks of complications. If you want, I can provide more details about symptoms, causes, risk factors, or treatments.
