Atrial fibrillation and ventricular fibrillation are both types of irregular heartbeats (arrhythmias). Atrial fibrillation (AFib) affects the two upper chambers of your heart. Ventricular fibrillation ...

Atrial fibrillation (AFib) is a condition that causes the heart to beat rapidly and irregularly. This can lead to heart failure, which develops when the heart is not pumping blood efficiently around ...

Atrial fibrillation happens most often in older adults and in people with other heart problems. But it also affects younger people. Roughly 800,000 Americans under age 40 have atrial fibrillation, ...

When it comes to heart health, many conditions are tricky to diagnose because their symptoms can be similar to others, and ...

Atrial fibrillation (AFib) is an irregular heart rhythm caused by rapid, uneven electrical signals in the heart’s upper chambers. Panic attacks begin in the brain and can create intense physical ...

If you have a racing or irregular heartbeat, also known as an arrhythmia, one likely suspect is atrial fibrillation (AFib). “Of all the possible heart rhythm disorders, atrial fibrillation is by far ...