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 also increases …
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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 …
FIB Definition & Meaning - Merriam-Webster
The meaning of FIB is a trivial or childish lie. How to use fib in a sentence. Synonym Discussion of Fib.
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 the upper …
Atrial Fibrillation (AFib) Signs, Symptoms and Treatment
Feb 5, 2025 · Atrial fibrillation (AFib) is a common type of irregular heartbeat that affects an estimated five million Americans.
Understanding atrial fibrillation and its symptoms - UCLA Health
Dec 6, 2024 · When someone has atrial fibrillation, it means the two upper chambers of the heart have ceased to function properly. It occurs due to a malfunction in a cluster of cells in the right atrium, …
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 …
Understanding Atrial Fibrillation (A-Fib) | UMass Memorial Health
Atrial fibrillation, or A-fib, is a common type of heart arrhythmia. It causes fast, chaotic electrical signals in the atria.
A-Fib (Atrial Fibrillation) - What You Need to Know - Drugs.com
Dec 9, 2025 · Care guide for A-Fib (Atrial Fibrillation). Includes: possible causes, signs and symptoms, standard treatment options and means of care and support.