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What is supraventricular tachycardia and what causes it?

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Sometimes, doctors don't know what sets off the racing, thumping heartbeat caused by supraventricular tachycardia (SVT).

What they do know: It starts in the upper chambers of your heart with electrical signals that tell it when to pump. These impulses go in a loop instead of heading off to the right place. This causes your heartbeat to speed up -- sometimes to three times its normal pace.

You and your doctor might be able to figure out what your triggers are. That could help you control this condition.

SOURCES:

American College of Cardiology: "2015 Guideline for the Management of Supraventricular Tachycardia."

National Health System U.K.: "Supraventricular tachycardia (SVT) -- Causes."

Mount Sinai Hospital: "Paroxysmal Supraventricular Tachycardia."

American Heart Association: "Tachycardia/Fast Heart Rate."

Uptodate.com: "Epidemiology of and risk factors for atrial fibrillation," "Arrhythmias in COPD," "Arrhythmias following cardiac transplantation."

Arrhythmia Alliance (U.K.): "Living with SVT, treating it with ablation and complications later needing a pacemaker."

Larsson, S. Journal of the American College of Cardiology, July 2014.

American College of Cardiology: "Supraventricular Tachycardia -- Topic Overview."

A Proposed Rule by the Food and Drug Administration, Federal Register, November 24, 2000.

Children's Mercy Hospital and Clinics: "Supraventricular Tachycardia (SVT)."

Finlay, M. Heart Rhythm. January 2016.

Frommeyer, G. Netherlands Heart Journal, February 2013.

UCLA Cardiac Arrhythmia Center: "FAQ - Supraventricular Tachycardia (SVT)."

Reviewed by James Beckerman on August 02, 2018

SOURCES:

American College of Cardiology: "2015 Guideline for the Management of Supraventricular Tachycardia."

National Health System U.K.: "Supraventricular tachycardia (SVT) -- Causes."

Mount Sinai Hospital: "Paroxysmal Supraventricular Tachycardia."

American Heart Association: "Tachycardia/Fast Heart Rate."

Uptodate.com: "Epidemiology of and risk factors for atrial fibrillation," "Arrhythmias in COPD," "Arrhythmias following cardiac transplantation."

Arrhythmia Alliance (U.K.): "Living with SVT, treating it with ablation and complications later needing a pacemaker."

Larsson, S. Journal of the American College of Cardiology, July 2014.

American College of Cardiology: "Supraventricular Tachycardia -- Topic Overview."

A Proposed Rule by the Food and Drug Administration, Federal Register, November 24, 2000.

Children's Mercy Hospital and Clinics: "Supraventricular Tachycardia (SVT)."

Finlay, M. Heart Rhythm. January 2016.

Frommeyer, G. Netherlands Heart Journal, February 2013.

UCLA Cardiac Arrhythmia Center: "FAQ - Supraventricular Tachycardia (SVT)."

Reviewed by James Beckerman on August 02, 2018

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Are caffeine and alcohol triggers for supraventricular tachycardia?

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