
Atrial fibrillation - Symptoms and causes - Mayo Clinic
Mar 8, 2024 · 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 …
Afib (Atrial Fibrillation): Symptoms & Treatment - Cleveland Clinic
Atrial fibrillation (Afib) is an irregular heart rhythm that begins in your heart’s upper chambers (atria). Symptoms include fatigue, heart palpitations, trouble breathing and dizziness. Afib is …
Normal Sinus Rhythm vs. Atrial Fibrillation Irregularities - WebMD
Jan 14, 2024 · When your heart is working like it should, your heartbeat is steady with a normal sinus rhythm. When it's not, you can have the most common irregular heartbeat, called AFib.
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 - Wikipedia
Atrial fibrillation (AF, AFib or A-fib) is an abnormal heart rhythm (arrhythmia) characterized by rapid and irregular beating of the atrial chambers of the heart. [11] . It often begins as short …
Atrial Fibrillation (AFib): Symptoms, Treatment, When to Worry
Feb 23, 2024 · Atrial fibrillation, often called AFib, causes an irregular and sometimes rapid heartbeat. It ranks as one of the most common arrhythmias (irregular heart rhythms). AFib …
Atrial Fibrillation (AFib): Symptoms and Treatment - WebMD
Nov 15, 2023 · 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 rhythm is out of whack.
About Atrial Fibrillation | Heart Disease | CDC - Centers for …
Atrial fibrillation, often called AFib or AF, is the most common type of treated heart arrhythmia. An arrhythmia is when the heart beats too slowly, too fast, or in an irregular way.
Atrial Fibrillation: Understanding the Irregular Heartbeat
Atrial fibrillation (AFib) is a common heart rhythm disorder characterized by an irregular and often rapid heartbeat. This condition can lead to various complications, including stroke and heart …
Why Atrial Fibrillation Matters - American Heart Association
Mar 26, 2025 · How does AFib lead to additional heart rhythm problems? Basic answer: The heart’s electrical system stops working properly and fails to keep the heart chambers in …