Radiofrequency ablation is a procedure done in the Catheterization Laboratory to help correct specific problems that cause the heart to beat faster than it should. Quality of life includes the physical as well as the emotional aspects of a patient. Doctors have always tried to take care of a medical problem with minimal physical and emotional risk. It is assumed that once the medical problem is fixed, the patient will have an improved quality of life. To know if this assumption is true, the investigators are asking children scheduled for this procedure, along with their family, to answer questions before the ablation, then answer the same questions 5-6 months after the ablation.