Atrial fibrillation: Living with a common heart condition
Preventing stroke is the top priority if your heart is beating irregularly. A variety of options can control symptoms.
A flutter in the chest and a racing heartbeat could be just a passing cardiac blip, perhaps triggered by emotional stress or too much caffeine. But sometimes it's a sign of atrial fibrillation—the irregular quivering of the heart's upper chambers, or atria.