Abstract
Cardiac rhythm disorders in children are not too common, but there are pediatricians dreaded diagnosis. With the exception of atrial fibrillation, which occur in children, is represented by the whole spectrum rhythm disorders as in adults.
Ratio of individual arrhythmias is different. In terms of the mechanism of arrhythmias can be divided into arrhythmia arising on the basis of reentry, abnormal automaticity or triggered activity.