RT Book, Section A1 Deal, Barbara J. A2 Goodman, Denise M. A2 Green, Thomas P. A2 Unti, Sharon M. A2 Powell, Elizabeth C. SR Print(0) ID 7003823 T1 Chapter 61. Intracardiac Electrophysiology Studies T2 Current Procedures: Pediatrics YR 2007 FD 2007 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-145908-2 LK accesspediatrics.mhmedical.com/content.aspx?aid=7003823 RD 2024/04/24 AB • Evaluation of tachycardia mechanism, in preparation for catheter ablation procedure.• Evaluation of wide QRS tachycardia, where ECG interpretation does not clarify mechanism of tachycardia.• Evaluation of sudden cardiac arrest.• Evaluation of unexplained syncope.• Risk stratification for risk of cardiac arrest in patients with repaired congenital heart disease.• Evaluation of conduction system, or risk of tachycardia, particularly prior to surgery for congenital heart disease.