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   What is atrial fibrillation (AF)?

   • Atrial fibrillation (also called Afib or AF) is an irregular heart rhythm ( arrhythmia) that begins in the upper (atria) of your heart. If you have atrial fibrillation, the normal cycle of electrical impulses in your heart is interrupted.

   Atrial Fibrillation (Afib): Causes, Symptoms and Treatment

   my.clevelandclinic.org/health/diseases/16765-atrial-fibrillation-afib

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   How does atrial fibrillation affect the heart?

   • AFib can lead to blood clots in the heart. The condition also increases the risk of stroke, heart failure and other heart-related complications. During atrial fibrillation, the heart's upper chambers — called the atria — beat chaotically and irregularly. They beat out of sync with the lower heart chambers, called the ventricles.

   Atrial fibrillation - Symptoms and causes - Mayo Clinic

   www.mayoclinic.org/diseases-conditions/atrial-fibrillation/symptoms-causes/syc-20350624

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   What causes atrial fibrillation?

   • Problems with the heart's structure are the most common cause of atrial fibrillation (AFib). Heart diseases and health problems that can cause AFib include: A heart problem you're born with, called a congenital heart defect. A problem with the heart's natural pacemaker, called sick sinus syndrome. A sleep disorder called obstructive sleep apnea.

   Atrial fibrillation - Symptoms and causes - Mayo Clinic

   www.mayoclinic.org/diseases-conditions/atrial-fibrillation/symptoms-causes/syc-20350624

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2. www.mayoclinic.org › diseases-conditions › atrialAtrial fibrillation - Symptoms and causes - Mayo Clinic

   www.mayoclinic.org › diseases-conditions › atrial

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   Mar 8, 2024 · Atrial fibrillation (AFib) is an irregular and often very rapid heart rhythm that can lead to stroke, heart failure and other complications. Learn about the symptoms, causes and treatment options for AFib, and how to prevent blood clots and restore a normal heartbeat.

3. my.clevelandclinic.org › health › diseasesAtrial Fibrillation (Afib): Causes, Symptoms and Treatment

   my.clevelandclinic.org › health › diseases

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   Learn about Afib, an irregular heart rhythm that affects millions of people worldwide. Find out the signs, causes, complications and treatments of this common arrhythmia.

   • What Is Atrial Fibrillation?

     Atrial fibrillation (AF or AFib) is the most common irregular heart rhythm that starts in the atria. Instead of the SA node (sinus node) directing...
   • What Are The Dangers of Atrial Fibrillation?

     Some people live for years with atrial fibrillation without problems. However, atrial fibrillation can lead to future problems: 1. Because the atri...
   • What Causes Atrial Fibrillation?

     There is no one “cause” of atrial fibrillation, although it is associated with many conditions, including:
   • What Are The Symptoms of Atrial Fibrillation?

     You may have atrial fibrillation without having any symptoms. If you have symptoms, they may include: 1. Heart palpitations - Sudden pounding, flut...

4. www.heart.org › en › health-topicsWhat is Atrial Fibrillation? | American Heart Association

   www.heart.org › en › health-topics

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   Mar 23, 2023 · Atrial fibrillation (AFib) is a common heart arrhythmia that can cause blood clots, stroke and heart failure. Learn about the signs, causes, complications and how to manage AFib with medication, lifestyle changes and support groups.

5. www.heart.org › en › health-topicsAtrial Fibrillation | American Heart Association

   www.heart.org › en › health-topics

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   What is atrial fibrillation? Atrial fibrillation is a quivering or irregular heartbeat, or arrhythmia. Atrial fibrillation, also known as AFib or AF, can lead to blood clots, stroke, heart failure and other heart-related complications. Learn more about atrial fibrillation.

6. www.cdc.gov › about › atrial-fibrillationAbout Atrial Fibrillation | Heart Disease | CDC

   www.cdc.gov › about › atrial-fibrillation

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   May 15, 2024 · Atrial fibrillation, often called AFib or AF, is the most common type of treated heart arrhythmia. An arrhythmia is when the heart beats too slowly, too fast, or in an irregular way. When a person has AFib, the normal beating in the upper chambers of the heart (the two atria) is irregular, and blood doesn't flow as well as it should from the ...

7. www.webmd.com › heart-disease › atrial-fibrillationAtrial Fibrillation (AFib): Symptoms and Treatment - WebMD

   www.webmd.com › heart-disease › atrial-fibrillation

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   Nov 15, 2023 · Learn about atrial fibrillation, a common heart rhythm disorder that can cause palpitations, shortness of breath, and stroke. Find out the types, risk factors, diagnosis, and treatment options for AFib.