
Atrial fibrillation - Symptoms and causes - Mayo Clinic
Oct 3, 2025 · 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 …
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 …
Atrial Fibrillation (AFib): Symptoms & Treatment - Cleveland Clinic
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 …
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 …
Atrial Fibrillation (A-Fib): Symptoms & Risk Factors | Brigham and ...
Atrial fibrillation (A-fib) is a type of arrhythmia (abnormal heartbeat) that affects almost five million Americans. It often originates in the left atrium (the upper left chamber of the heart). When …
Atrial Fibrillation (AFib) Center: Symptoms, Causes, and …
Heart rate control is a key way to manage atrial fibrillation. Doctors consider it one of the four pillars of AFib care. One way to control AFib is to take rhythm control medication, which...
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 …
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. …
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.
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