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) 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.

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).

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.

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 …

Feb 5, 2025 · Learn about the signs, symptoms and treatments of AFib, a common type of irregular heartbeat that affects an estimated 5 million Americans.

Nov 30, 2023 · Atrial fibrillation is the most sustained common arrhythmia, and its incidence and prevalence are increasing in the United States and globally. Recommendations from the “2014 …

Jul 17, 2025 · Atrial fibrillation (AFib) is a common heart arrhythmia that disrupts regular blood flow, increasing the risk of blood clots. Without treatment, it can lead to serious complications such as...

May 15, 2024 · When a person has AFib, the normal beating in the upper chambers of the heart (the two atria) is irregular, and blood doesn't flow as well as it should from the atria to the lower chambers of …