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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][12] It often begins as short periods of abnormal beating, which become longer or continuous over time. [4] It may also start as other forms of arrhythmia such as atrial flutter ...
Chest pain, pressure, or discomfort. Abdominal pain. Shortness of breath. Lightheadedness. Fatigue or lack of energy. Exercise intolerance. Atrial fibrillation may happen occasionally with ...
AFib Symptoms. You might feel: Heart palpitations -- a flutter in your chest or heartbeat that races, pounds, or flutters. Pain and pressure or tightness in your chest. Confused. Dizzy. Faint or ...
You may become very aware of your own heartbeat. Over time, AFib can cause the heart to weaken and malfunction. The heart’s ineffective contractions cause blood to pool in the atria. This can ...
Atrial fibrillation (AFib) is an abnormal or rapid heart rate. This is a common but serious type of arrhythmia. It occurs when the heart’s upper and lower chambers beat out of coordination. This ...
Takeaway. AFib is characterized by irregular and often rapid heartbeats originating in the atria (upper chambers of your heart). A heart rate that’s excessively fast and irregular (RVR) in AFib ...
Recognize AFib vs. Stroke. A stroke can happen when a blood clot travels to the brain. It's the biggest risk linked to AFib. People with AFib are five times more likely to have a stroke than others.
The Centers for Disease Control and Prevention (CDC) estimates that 12.1 million U.S. adults will have atrial fibrillation (AFib or AF) by 2030. The American Heart Association estimates that 2.7 ...