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Rhythm disorders in pediatric patients encompass a vast and diverse group of problems that vary greatly not only in etiology but also in presentation. These disorders can range from bradycardia to tachycardia but also include inherited channelopathies as well as rhythm disorders associated with underlying congenital heart disease. With such a diverse group of potential problems and the high degree of variability in presenting symptoms, the evaluation and diagnosis of rhythm disorders can be difficult. As with most medical issues, starting with a thorough history and physical examination will help guide the need for further evaluation and testing to reach the appropriate diagnosis.

The presentation of arrhythmias varies depending on the type of arrhythmia, but even within the same arrhythmia there can be significant variation in presenting symptoms. Palpitations are a common complaint in the pediatric population, but most patients with...

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