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 ...

Atrial fibrillation (AFib) and atrial flutter are both arrhythmias, or atypical heart rhythms. Both conditions share similar causes, risk factors, symptoms, and treatments but differ in other ways.

A 70-year-old man comes to the clinic for routine follow-up of hypertension and is found to have new atrial fibrillation of unknown duration. Atrial fibrillation increases the risk of mortality and ...

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 ...