In pediatrics, catheter ablation is often performed to treat conditions such as supraventricular tachycardia (SVT), atrial flutter, and certain types of ventricular tachycardia. These arrhythmias can cause symptoms such as palpitations, dizziness, shortness of breath, and in severe cases, heart failure. When medication is ineffective or not well-tolerated, catheter ablation can be a highly effective alternative.