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 is an abnormality in the beating of the heart. Take a comprehensive look at the causes, symptoms, diagnosis, and treatment of atrial flutter and atrial fibrillation.

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 ...