Atrial fibrillation is a cardiac arrhythmia in which the upper chambers of the heart the atria beat irregularly and, often, rapidly. The condition occurs as a consequence of uncoordinated ...

Atrial fibrillation occurs when action potentials fire very rapidly within the pulmonary veins or atrium in a chaotic manner. The result is a very fast atrial rate — about 400 to 600 beats per ...

Background Differences in the clinical outcomes and level of risk among Asian versus non-Asian patients with atrial ...

Atrial fibrillation (AFib) is the most common form of irregular heartbeat (arrhythmia). People with AFib have many treatment options, including medications and medical procedures. However ...

Atrial fibrillation, or AFib, is a fast and irregular heart rhythm that, left untreated, can lead to blood clots, stroke and heart failure. It's the most common type of arrhythmia, a potentially ...