Download the Full October 2017 Issue PDF
Atrial fibrillation (afib) affects an estimated 2.7 million Americans, and is a leading risk factor for stroke and other cardiovascular problems. When a heart is in afib, the upper chambers (atria) beat chaotically and out of synch with the lower chambers (ventricles). This can cause blood to pool in the heart and form a blood clot. It can also put extra strain on the heart, putting you at a higher risk of heart failure.