Is the rate regular in atrial flutter?

Atrial flutter is a relatively common supraventricular arrhythmia characterized by rapid, regular atrial depolarizations at a characteristic rate around 300 beats/min and a regular ventricular rate corresponding to one-half or one-quarter of the atrial rate (150 or 75 beats/minute).

Atrial flutter is a common type of heart arrhythmia. You may have no symptoms . If present, symptoms may include a noticeable fast, steady or irregular pulse, shortness of breath, dizziness, trouble with normal activities or exercise, a feeling that your heart is pounding, or tightness in your chest.

Atrial flutter is a type of heart rhythm disorder in which the heart’s upper chambers (atria) beat too quickly. In atrial flutter, your heart’s upper chambers (atria) beat too quickly. This causes the heart to beat in a fast, but usually regular, rhythm .