Atrial Fibrillation (AFib)

Atrial Flutter vs Atrial Fibrillation: Key Differences

Atrial fibrillation (AFib) and atrial flutter are two common types of abnormal heart rhythms that affect the upper chambers of the heart, known as the atria . While both conditions cause the heart to beat too fast, atrial flutter usually maintains a regular rhythm, whereas AFib results in a chaotic and irregular heartbeat . These arrhythmias often occur in the same person at different times and can increase the risk of serious complications such as stroke .