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Atrial fibrillation - Symptoms and causes - Mayo Clinic
Jan 14, 2026 · 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 …
What is atrial fibrillation and how is it treated?
Feb 7, 2026 · Atrial fibrillation, or A-fib, is becoming more common, but doctors say treatments are improving. The condition is a quivering or irregular heartbeat that can lead to blood clots, stroke and …
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 (AFib): Causes, Symptoms, and Treatment
Nov 15, 2023 · What Is Atrial Fibrillation? Atrial fibrillation, also called AF or AFib, is a quivery, fluttery heartbeat. You might also hear the doctor call it arrhythmia. It means your heart’s normal...
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 …
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 …
What doctors wish patients knew about atrial fibrillation
Feb 28, 2025 · Atrial fibrillation (AFib) causes your heart to beat faster than it should. Paari Dominic, MBBS, MPH, of University of Iowa Health Care, shares more.
Understanding AFib, a serious but manageable health condition
Oct 13, 2025 · It’s estimated that over 12 million people in the U.S. have atrial fibrillation, or AFib, a condition that can lead to significant health problems. Just how common is AFib? Odds are pretty …
What is atrial fibrillation? - The Columbian
3 days ago · Moore, a radiologist, knew what it was: A-fib. Short for atrial fibrillation, A-fib is a quivering or irregular heartbeat that is a worrisome stage-setter for blood clots, stroke and heart failure.