Atrial fibrillation, also called AF or AFib, is a quivery, fluttery heartbeat. You might also hear the doctor call it arrhythmia. It means your heart’s normal rhythm is out of whack. Because your ...

What is atrial fibrillation, and why has Apple decided that it’s worth screening for it? The first question is much easier to answer, so let’s get that out of the way. Your heart has four chambers, ...

Atrial fibrillation, a rapid, irregular heartbeat that can lead to stroke or sudden death, is three times more common than previously thought, affecting nearly 5% of the population, or 10.5 million ...

Atrial fibrillation (AFib) is the most common problem with your heartbeat's rate or rhythm. Your heart has four chambers – two upper chambers called atria and two lower called ventricles. Inside the ...

Atrial fibrillation is a leading preventable cause of recurrent stroke for which early detection and treatment are critical. However, paroxysmal atrial fibrillation is often asymptomatic and likely to ...

Cardiac Rehab Is Safe for Folks With A-Fib, And Might Even Help Ease It By Ernie Mundell HealthDay ReporterWEDNESDAY, July 30, 2025 (HealthDay News) — If you’ve had a heart attack or are in heart ...