Atrial flutter is typically diagnosed through a combination of physical examination, medical history review, and electrocardiography (ECG).
Physical Examination
During a physical examination, a doctor will check for signs of atrial flutter such as a rapid pulse, a fluttering feeling in the chest, and lightheadedness. A doctor may also check for signs of cardiomyopathy, which can be caused by atrial flutter, such as an enlarged heart or abnormal heart sounds.
Medical History Review
A doctor may review a patient's medical history to look for signs and symptoms of atrial flutter, such as palpitations or shortness of breath. The doctor may also ask about any family history of heart disease or other heart-related conditions.
Electrocardiography (ECG)
An electrocardiography (ECG) is the most common test used to diagnose atrial flutter. An ECG records the electrical activity of the heart and can detect abnormal heart rhythms, such as atrial flutter. During an ECG, electrodes are placed on the chest and attached to a machine that records the heart's electrical activity.