by American Heart Association Credit: Pixabay/CC0 Public Domain A study in the American Heart Association journal Circulation: Arrhythmia and Electrophysiology finds new-onset atrial fibrillation (AFib) in 1 in 20 patients hospitalized with COVID-19. AFib is a quivering or irregular heartbeat (arrhythmia) that can lead to blood clots, stroke, heart failure and other heart-related complications. At...