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 …

Apr 21, 2025 · 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. Risk …

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.

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 periods of abnormal …

Nov 15, 2023 · Atrial fibrillation is a common heart condition that causes irregular heartbeats. Learn about its causes, symptoms, and treatment options in this comprehensive guide.

Atrial fibrillation is a type of arrhythmia in which the electrical signals in the atria, or the two small chambers of the heart, are fired in a very fast and uncontrolled manner.

Sep 14, 2025 · Atrial fibrillation causes an irregular and sometimes rapid heartbeat, which can lead to serious health problems. Symptoms of atrial fibrillation include a rapid and irregular heartbeat, …

May 26, 2022 · 7 common Afib triggers that may surprise you An expert weighs in on what to avoid to prevent an atrial fibrillation episode. May 26, 2022 5:00 AM Author |

Sep 12, 2025 · Atrial fibrillation, also known as AFib, is an irregular heartbeat, or arrhythmia that happens when the upper chambers of the heart (the atria) are out of sync with the lower chambers …

May 14, 2024 · Atrial fibrillation, often called AFib or AF, is the most common type of treated heart arrhythmia. Some people who have AFib don’t know they have it and don’t have any symptoms.