
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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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 …
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.
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 …
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.
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 …
Atrial Fibrillation: Prevention, Treatment and Research
Atrial fibrillation (often called “A-fib” or AF) is the most common type of abnormal heartbeat. It can be cause for concern since it dramatically increases the risk of stroke.
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 …
FIB | English meaning - Cambridge Dictionary
Evidence that does not fit their preconceptions is more likely to be dismissed as misleading (fantasy, fable, fib or fiction).