الفهرس 
Review of LiteratureOnly 14 pages are availabe for public view
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Abstract
Supraventricular tachycardia (SVT) is the most common tachyarrhythmia in pediatric patients, and accounts for more than 90% of pediatric arrhythmias. It is defined as a sustained tachyarrhythmia originating above the bundle of His. Although its exact incidence is unknown, it has been estimated to affect between 1 in 250 to 1in 25,000 children. We concentrated on the three most common groups of SVT mechanisms: atrioventricular re-entry tachycardia (AVRT), atrioventricular nodal re-entry tachycardia (AVNRT), and atrial ectopic tachycardia (AET). The aim of our study was to characterize the patterns of different types of SVT in different pediatric age groups, asses the efficacy and safety of RFA in termination of SVT episodes that had been subjected previously to unsuccessful medical management, and to assess the results and complications following RFA of different types of SVT. The present study population included 60 patients suffered from recurrent episodes of supraventricular tachycardia after failure of traditional pharmacological management. Diagnosis of SVT was based on 12-lead surface electrocardiograms. The study population was divided into three groups according to the type of SVT: (AVRT, AVNRT and AET). The arrhythmias in the patients included: atrioventricular reentrant tachycardia (AVRT; n = 45, 75%), atrioventricular nodal reentrant tachycardia (AVNRT; n = 6, 10%), and atrial tachycardia (AT; n = 9, 15%). Their mean age= 12.4 ± 5.3 years, ranged from 3 years to 18 years. Their mean body weight was 32.02 ± 12.3 Kg, ranged from 14 Kg to 60 Kg. Male/Female ratio was 1.6/1 (Males no=37, 61.7% and females no=23, 38.3%) All Patients were subjected to full history taking regarding onset and frequency of palpitation, syncope, chest pain, dyspnea, heart failure, drug intake and family history of arrhythmia. Also they were subjected to resting 12-lead surface ECG and ECG during the attack. Echocardiography was done for detection of structural heart diseases. In conclusion, the electrophysiologic study and ablation of SVT could be done easily, safely and efficiently among pediatric patients with SVT. - We recommend that RF ablation is a safe & effective method for treatment of different types of SVT, after failure of traditional pharmacological therapy and when body weight is over 14 kg. - With more experience, we can study and ablate children below 14 Kg weight; also we can increase the number of the studied population. - A registry for pediatric EPS & ablation can be initiated and more data can be studied to evaluate more the efficacy and safety of RFA. - This study can encourage other pediatric centers to start EPS and RF ablation of different types of SVT in pediatric age group.