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 minute.
Apple has made available in Australia its electrocardiogram app for Series 4, 5 and 6 of its Apple Watch. An irregular rhythm notification feature that checks atrial fibrillation was also included in ...