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.

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.

Jan 14, 2026 · This area is called the AV node. The heart's electrical signals can't pass through the damaged area. So this treatment blocks the faulty heart signals that cause atrial fibrillation (AFib). …

Atrial fibrillation, also called afib or af, is an irregular heartbeat that can lead to stroke, blood clots, heart failure and other heart-related complications.

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 …

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.

Jan 9, 2025 · A quivery heartbeat and a flutter in your chest are two telltale signs you could be in atrial fibrillation, or AFib. That means your heart is beating out of sync.

Atrial fibrillation ... 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 …

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).