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Pediatric Arrhythmia

What You Need to Know

An arrhythmia is an abnormal heart rhythm. It may be a heart rate that is too fast, too slow or irregular.

Key Symptoms

A child with an arrhythmia may not have any symptoms. For those who do, the most common symptoms may include feeling tired, heart palpitations, low blood pressure or other symptoms.


Your child's cardiologist may use tests such as an electrocardiogram, Holter monitoring, electrophysiologic studies or other diagnostic tests.


Some children don't need treatment. If treatment is given, your child may need medicine, radiofrequency ablation, a device or surgery.


Our team is standing by to schedule your child’s appointment.

Frequently Asked Questions

What are arrhythmias in children?

What causes arrhythmias in a child?

What are the symptoms of an arrhythmia in a child?

How is an arrhythmia diagnosed in a child?

How is an arrhythmia treated in a child?

What are possible complications of an arrhythmia in a child?

How can I help my child live with an arrhythmia?

When should I call my child's healthcare provider?

Meet the Providers Who Treat Arrhythmia

Departments that Treat Arrhythmia

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Electrophysiology (Heart Rhythm Team)

Our pediatric electrophysiologists perform ablations and other procedures to correct abnormal heart rhythms, with a success rate close to 98 percent. Learn more about Cardiac Electrophysiology.

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Cardiogenetics Program

We help families with known or suspected inherited heart diseases receive early detection and treatment. Learn more about our Cardiogenetics Program.

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Critical Care Medicine

With the only pediatric, cardiac and neuro-intensive care units in the immediate Washington, D.C., area, Children's National Hospital is the region's leading provider of critical care medicine for seriously ill and injured infants and children.

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