by University of California, Los Angeles A 12 lead ECG showing atrial fibrillation at approximately 150 beats per minute. Credit: James Heilman, MD/Wikipedia/CC BY-SA 3.0 Direct-acting oral anticoagulants such as apixaban are the most widely used medications of this type in people with atrial fibrillation, yet 26% to 45% of people fail to properly adhere to...