The Electrophysiology of Atrial Fibrillation: From Basic Mechanisms to Catheter Ablation

Figure 8

The hypothetical mechanism of the occurrence of fibrillatory conduction in macrocircuits, studied by the technique of selective activation remapping. (a) Clockwise perimitral flutter with 205 ms CL and constant 1 : 1 conduction throughout the atria (regular atrial tachycardia). (b) Acceleration of the CL to 187 ms with fibrillatory conduction (unstable atrial tachycardia) (from Ioannidis et al. [29]).

(a)

(b)