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  1. Atrial fibrillation - Symptoms and causes - Mayo Clinic

    3 days ago · Atrial fibrillation (AFib) is an irregular and often very rapid heart rhythm. An irregular heart rhythm is called an arrhythmia. AFib can lead to blood clots in the heart. The condition also increases …

  2. What is Atrial Fibrillation? - American Heart Association

    Mar 26, 2025 · Atrial fibrillation is an 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. AFib …

  3. Atrial Fibrillation (AFib): Symptoms & Treatment - Cleveland Clinic

    Apr 21, 2025 · AFib causes a fast, chaotic heartbeat. An electrocardiogram (ECG/EKG) test can show this irregular rhythm in graph form. AFib (atrial fibrillation) is an irregular heart rhythm that begins in …

  4. What Is Afib? - Johns Hopkins Medicine

    Afib stands for atrial fibrillation (AF), which is a type of arrhythmia, or abnormal heartbeat. Afib is caused by extremely fast and irregular beats from the upper chambers of the heart (usually more than 400 …

  5. A-Fib (Atrial Fibrillation) - What You Need to Know - Drugs.com

    Jan 6, 2026 · Care guide for A-Fib (Atrial Fibrillation). Includes: possible causes, signs and symptoms, standard treatment options and means of care and support.

  6. Atrial Fibrillation - What Is Atrial Fibrillation? | NHLBI, NIH

    Nov 30, 2022 · Atrial fibrillation, also known as A-fib or AF, is one of the most common types of arrhythmias (irregular heart rhythms). Atrial fibrillation causes your heart to beat irregularly and …

  7. Atrial Fibrillation Treatments: Medications, Therapies, Surgery

    Jan 8, 2026 · Atrial fibrillation treatments can slow and normalize your heartbeat. AFib triggers can include obesity, diabetes, and excessive alcohol use. Antiarrhythmic drugs are used to help maintain …

  8. Atrial Fibrillation – Symptoms and Causes | Penn Medicine

    What is atrial fibrillation? Atrial fibrillation (AFib) is a common heart rhythm disorder where the heart’s upper chambers, called the atria, beat irregularly and out of sync with the lower chambers, called the …

  9. Atrial Fibrillation - American Heart Association

    Atrial fibrillation, also called afib or af, is an irregular heartbeat that can lead to stroke, blood clots, heart failure and other heart-related complications.

  10. Why Atrial Fibrillation Matters - American Heart Association

    Mar 26, 2025 · Atrial fibrillation (AFib) can increase your risk for stroke and related heart problems. There are treatments and medications for AFib. But sometimes it never goes away. What are the …