At Dell Children’s Regional Heart Center, a partnership with UT Southwestern Medical Center, our pediatric cardiologists conduct electrophysiology studies (EPS) to diagnose arrhythmias in young people. Electrophysiology is the study of the heart’s electrical system. Arrhythmias are abnormal heart rhythms in which the heart may beat too fast, too slow or irregularly.

In the Cardiac Cath Lab, Dr. Arnold Fenrich, inserts and guides catheters from the child’s large blood vessels and into the heart. The test will identify the problem with the heart’s electrical system and what type of arrhythmia is present. Most arrhythmias can then be fixed by performing a catheter ablation. An ablation is a procedure that delivers heating energy (called radiofrequency) or freezing energy (called cryo) to the area causing the irregular heart beat.

Symptoms of arrhythmias include:

  • Chest discomfort
  • Dizziness and fainting
  • Rapid heartbeat
  • Shortness of breath

Types of arrhythmias include:

  • Supraventricular tachycardia
  • Atrial tachycardia
  • Complete heart block
  • Ventricular tachycardia
  • Wolff-Parkinson-White syndrome