Atrial flutter occurs when a “reentrant” circuit is present, causing a repeated loop of electrical activity to depolarize the atrium at a rate of about 250 to 350 beats per minute; the atrial ...

Typical atrial flutter results from a reentrant circuit around the tricuspid valve and through the cavo-tricuspid isthmus. This anatomically makes ablation much easier than in atrial fibrillation ...