by Michelle Badash, MS
The heart has 4 chambers. It has 2 upper chambers (atria) and 2 lower chambers (ventricles). Electrical signals regulate the heart beat. The signals also help the atria and ventricles work together in the same rhythm. The blood from the atria is pushed into the ventricles and leaves the heart to circulate to the rest of the body.
Atrial flutter is a type of abnormal fast beating ( arrhythmia) in the atria. These fast beats make it difficult for the atria to push all the blood into the ventricles. As a result, the ventricles push less blood through the body.
Atrial flutter may be an acute or chronic disorder that comes and goes. Atrial flutter is not usually life-threatening when it is treated. However, it may increase your risk of developing blood clots and a stroke.
Atrial flutter may be caused by the following:
Factors that may increase your chances of atrial flutter:
Atrial flutter is more likely to develop in older adults.
Atrial flutter does not always produce symptoms. However, symptoms, when present, may include:
Your doctor will ask about your symptoms and medical history. A physical exam will be done. Your doctor may also recommend that you see a cardiologist or arrhythmia specialist. This type of physician may be found in a larger hospital.
Your doctor may need pictures of your heart and information about how it functions. This can be done with:
The goal of treating atrial flutter is to slow down the electrical impulses that are sent from the atria to the ventricles. Treatment aims at restoring normal rhythm and preventing future episodes. Talk with your doctor about the best treatment plan for you. Treatment options include the following:
Medication may be given to slow the rapid heart rate and change the atrial flutter to a normal rhythm. These medications may include:
Other medications called antiarrhythmics may be used to change the rhythm back to normal. They may also help your heart maintain a normal rhythm.
An external defibrillator is applied to the chest. It uses an electrical current to shock the heart back to its normal rhythm.
Ablation can be performed during an electrophysiological study (EP) study on patients with recurring atrial flutter that cannot be controlled with medications. Using the same catheters, an area of the heart where an abnormal electrical rhythm is generated can be destroyed. This can be a cure for atrial flutter.
Blood thinners are an important therapy to prevent blood clots that can cause strokes or other serious complications. They can be used on those who have recurrent atrial flutter. They can also be used on those who are at an increased risk.
To help reduce your chances of atrial flutter:
American Heart Association
Heart Rhythm Society
Canadian Heart Rhythm Society
Heart and Stroke Foundation of Canada
Atrial flutter. EBSCO DynaMed Plus website. Available at: http://www.dynamed.com/topics/dmp~AN~T115251/Atrial-flutter . Updated February 22, 2017. Accessed November 28, 2017.
Atrial flutter. Heart Rhythm Society website. Available at
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Accessed November 28, 2017.
Other heart rhythm disorders. American Heart Association website. Available at:
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Updated December 21, 2016. Accessed November 28, 2017.
Last reviewed November 2018 by EBSCO Medical Review Board Michael J. Fucci, DO, FACC
Last Updated: 12/20/2014
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