3 1 Atrial Flutter

Typical atrial flutter is an organised atrial tachycardia . It can also be defined as a macroreentrant tachycardia confined to the right atrium. This arrhythmia has a 200-260 ms cycle length, although it may fluctuate depending on patient’s previous treatment or ablation, congenital heart disease, etc.

Type II atrial flutter (AFII) is an arrhythmia which usually cannot be interrupted by atrial pacing : the underlying mechanism is considered to be a leading circle without an excitable gap.

What are the different types of atrial flutter?