What is the difference between AFib and atrial flutter?

In atrial fibrillation, the atria beat irregularly. In atrial flutter, the atria beat regularly, but faster than usual and more often than the ventricles , so you may have four atrial beats to every one ventricular beat.

How is atrial flutter treated?

Currently, atrial flutter is successfully “cured” by radiofrequency catheter ablation ; but treatment to restore atrial fibrillation to sinus rhythm has been the traditional use of medications and external cardioversion.