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 …
Atrial Fibrillation (AFib): Symptoms and Treatment - WebMD
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 rhythm...
Atrial Fibrillation (AFib): 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.
What is Atrial Fibrillation? - American Heart Association
Mar 26, 2025 · Atrial fibrillation, also known as AFib or AF, can lead to blood clots, stroke, heart failure and other heart-related complications. AFib is the most common type of irregular heart rhythm.
Atrial Fibrillation (AFib): Symptoms, Treatment, When to Worry
Sep 14, 2025 · 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 affects more than 5 …
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 (AFib): Symptoms, Causes & Treatment Options
Learn what causes atrial fibrillation, whether AFib can be cured, and the latest treatment options. Understand symptoms, risks, and when to see a heart specialist.
Atrial Fibrillation (AFib) Signs, Symptoms and Treatment
Feb 5, 2025 · What is Atrial Fibrillation (AFib)? Atrial fibrillation (AFib) is a type of heart arrhythmia in which the upper chambers of the heart (the atria) beat irregularly and out of sync with the lower …
What Is Atrial Fibrillation (AFib) and Its Risks?
3 days ago · Atrial fibrillation (AFib) is the most common type of cardiac arrhythmia, a disorder involving the heart’s rate or rhythm. This condition is characterized by an irregular and often rapid heartbeat …
What Is AFib and Why Is It Becoming More Common?
Feb 25, 2025 · Atrial fibrillation is an irregular and often fast heart beat that can cause poor blood flow. Usually known as AFib, it is becoming more common. In addition, this condition may affect people at …