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 and atrial fibrillation are types of abnormal heart rhythms. Learn about the similarities and differences between these two conditions.

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.

Diaphragm flutter is a rare disorder in which the diaphragm undergoes repeated involuntary contractions. Learn about its causes, symptoms, and treatment here.

Atrial Flutter Diagnosis and Treatment Atrial flutter is diagnosed based on your medical and family history, a physical exam, and an EKG, according to the Merck Manual.