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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? - 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...
Atrial Fibrillation (A-Fib) With RVR - Cleveland Clinic
Atrial fibrillation with rapid ventricular rate (A-fib with RVR) is a type of irregular heart rhythm. With A-fib with RVR, your heart doesn’t have a normal signaling process telling your heart when to beat. …
Atrial Fibrillation (AFib) Treatment | Houston Methodist
Learn about AFib procedures, symptoms of atrial flutter, and more.
Atrial Fibrillation — For Patients By Patients — StopAfib.org
Atrial fibrillation (afib) is the most common irregular heartbeat. Characterized by heart palpitations, dizziness, and shortness of breath (or no symptoms at all), it increases your stroke risk 500 percent …
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 …
Atrial Fibrillation (A-fib): Symptoms, Causes, Treatment - Health
May 18, 2023 · Atrial fibrillation, commonly known as A-fib, is a common type of heart arrhythmia heartbeat. Severity can vary greatly depending on the type and cause.
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 …