Patient Education

Atrial fibrillation (also called Afib) is an irregular heartbeat. Normally, the heart contracts and then relaxes in a regular rhythm, moving blood from the upper chambers (atria) into the ventricles. In Afib, the atria beat irregularly instead of in a steady pattern. Due to this irregularity, people with atrial fibrillation are at a higher risk of blood clots, heart failure, stroke and other heart-related complications.
AtriCure is the only company with devices that have FDA approval for the treatment of the most serious forms of Afib, when used in conjunction with other open-heart surgeries.  Many patients who have other structural heart disease (such as mitral valve, aortic valve, or coronary artery disease) also have Afib.  However, many of these patients undergoing other procedures for structural heart disease often leave the operating room with their Afib untreated.  To learn more about concomitant Afib and surgeons performing this procedure, visit

Over 33 million people are affected by atrial fibrillation worldwide.  To learn more about Afib, treatment options, clinical trials, and frequently asked questions, visit the links below.

About Afib

Afib Treatment

Afib and Stroke

Afib FAQs

Clinical Trials