P6-29:True mechanism of phase 2 reentry remains unclear: Computer modeling study

It is well documented that parasympathetic stimulation leads to atrial arrhythmias. Because acetylcholine abolishes the dome portion of an action potential (AP), phase 2 reentry (P2R), reentry due to propagation of the dome of an AP from areas with this dome to areas without it, may be the responsible mechanism. However, how exactly this happens remains unclear.