What is Atrial Fibrillation or AFib?

What Is Afib

Atrial fibrillation is the most common sustained heart rhythm in the United States affecting about 3 million Americans. Instead of beating normally, the upper chambers quiver or fibrillate. The upper chambers no longer fill the lower chambers with blood and heart output can be reduced by 20-40%. During atrial fibrillation the upper chambers send about 600 impulses […]