What sort of problem is an atrial flutter?

Atrial flutter: A fl is a pathologic rhythm in which the atria beat at approx 300 times a minute and transmit these impulses to the ventricles in a ratio which is variable but often tends to be 2:1 resulting in a heart rhythm of about 150 bpm. Treatment is individualized but usually includes anticoagulation and restoration of normal conduction.

Less common than AF: Atrial fluter less common than atrial fibrillation, and is often a indcator of future atrial fibrillation onset. You may not notice them, or you may feel a flutering in your chest. Atrial flutter can be caused by scarring in the heart resulting from prior cardiac disease or heart surgery, but it can also occur in some patients with no other identifiable heart problems.