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.

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.

In atrial fibrillation, the lack of an organized atrial contraction can result in some stagnant blood in the left atrium (LA) or left atrial appendage (LAA). This lack of movement of blood can lead to thrombus …

Mar 7, 2026 · Atrial fibrillation (afib) is the most common type of heart arrhythmia. Some people have symptoms such as dizziness, shortness of breath, fatigue, a fluttering or racing heart that alert them …

Find out about atrial fibrillation, a condition that causes an irregular heart rhythm, including symptoms, treatment and how it affects your life.

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.

May 14, 2024 · Atrial fibrillation, often called AFib or AF, is the most common type of treated heart arrhythmia. An arrhythmia is when the heart beats too slowly, too fast, or in an irregular way.

May 11, 2026 · Atrial fibrillation (AF) is an irregular, fast heartbeat that increases stroke risk. Learn about symptoms, causes, treatment, and prevention.

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 …