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What are heart palpitations?

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A pulse of electricity tells the four chambers in your heart when to squeeze to send the blood through. Sometimes that signal gets interrupted or doesn't follow its usual path. That makes one of the upper chambers (called the atria) quiver, or fibrillate. That gives you the feeling that your heart is skipping a beat or racing. It's a condition called heart palpitations.

SOURCES:

American Heart Association.

National Heart, Lung and Blood Institute: "What Is Atrial Fibrillation?"

American Family Physician: "Diagnosis and Treatment of Atrial Fibrillation."

American College of Cardiology/American Heart Association: "Management of Patients with Atrial Fibrillation."

Heart Rhythm Society: "Atrial Fibrillation."

American Family Physician: "Catheter Ablation of Supraventricular Arrhythmias and Atrial Fibrillation."

Reviewed by James Beckerman on May 2, 2018

SOURCES:

American Heart Association.

National Heart, Lung and Blood Institute: "What Is Atrial Fibrillation?"

American Family Physician: "Diagnosis and Treatment of Atrial Fibrillation."

American College of Cardiology/American Heart Association: "Management of Patients with Atrial Fibrillation."

Heart Rhythm Society: "Atrial Fibrillation."

American Family Physician: "Catheter Ablation of Supraventricular Arrhythmias and Atrial Fibrillation."

Reviewed by James Beckerman on May 2, 2018

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How often can paroxysmal atrial fibrillation occur?

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