Atrial flutter is similar to atrial fibrillation in that the rhythm originates in the atrium and causes a narrow complex tachycardia, which carries thromboembolic risk. Typical atrial flutter ...

Atrial flutter is similar to another type of arrhythmia called atrial fibrillation (AFib). Both start in the upper chambers of the heart and cause a fast heartbeat and increase your risk of stroke.

Atrial Flutter Symptoms and Complications Aside from a rapid heart rate, symptoms of atrial flutter include the following, according to the Heart Rhythm Society and MedlinePlus: Palpitations ...