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[Diagnosis of tachycardias in pediatric patients].

Arrythmias in the pediatric patient usually are considered rare; nonetheless, their number is increasing. The paroxistic supraventricular tachycardia is the most frequent symptomatic arrhythmia. The diagnosis is based on electrocardiographic register. There are few diagnostic tools including the Hotter monitoring and loop recorders. Once the tachychardia is detected, a deductive electrocardiographic diagnosis and specific treatment are established.