Chaotic behavior in a deterministic model of circus movement tachycardia in the WPW syndrome

In most studies the chaotic properties of the cardiac rhythm are related to different situations like infarction, sudden death, heart failure etc. In this study the possibility of chaotic behavior of cardiac arrhythmias, without the influence of factors like the autonomic nervous system, hormonal influence etc., was studied. In a simulation model of a reentrant tachycardia using an accessory pathway, chaotic behavior was demonstrated. This finding might have important implications on further analysis of life-threatening arrhythmias.