AI Finds Hidden Atrial Fibrillation in Subtle Beats of the Heart

  Atrial fibrillation, the fleeting arrhythmia of the heart, is hard to catch. Elusive and intermittent, it’s often overlooked during a seconds-long electrocardiogram (ECG, or EKG). But it is also a harbinger of potentially deadly health episodes like stroke and heart failure. But could artificial intelligence (AI) look at the tiniest nuances of systole and…