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 ...

Please provide your email address to receive an email when new articles are posted on . New-onset atrial fibrillation and atrial flutter are as common in hospitalized patients with influenza as with ...

Atrial flutter is a heart disorder in which the heart beats out of its normal rhythm. The condition is similar to atrial fibrillation (afib) — the most common type of arrhythmia (abnormal heartbeat) — ...