What causes a flutter in the heart?

Stress, exercise, medication or, rarely, a medical condition can trigger them. Although heart palpitations can be worrisome, they’re usually harmless. Rarely, heart palpitations can be a symptom of a more serious heart condition, such as an irregular heartbeat (arrhythmia), that might require treatment.

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What causes atrial flutter?

Atrial flutter is a type of abnormal heart rhythm, or arrhythmia. It occurs when a short circuit in the heart causes the upper chambers (atria) to pump very rapidly . Atrial flutter is important not only because of its symptoms but because it can cause a stroke that may result in permanent disability or death.

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