When your electrical system is working normally, the two upper chambers of the heart (atria) contract and pump blood into the two lower chambers (ventricles) in a well-coordinated way. This results in ...

Atrial fibrillation is a major global health concern with well-documented sex disparities in its epidemiology 1. The Framingham Heart Study reported an age-adjusted prevalence of atrial fibrillation ...

Atrial flutter is a type of abnormal heart rhythm that causes a rapid but regular heartbeat. It can lead to severe complications without treatment from a doctor. Atrial flutter occurs when the upper ...