657 RECURRENT TYPICAL ATRIAL FLUTTER UNDERGOING ABLATION IN A JUVENILE PATIENTS’ SERIES

Abstract Aims Cavotricuspid isthmus ablation is a routine procedure in electrophysiology laboratories. It mainly performed as treatment for cavotricuspid isthmus-dependent atrial flutter, which rare young patients without structural heart disease. Safety and efficacy data regarding this such are scarce. In case series we present the clinical characteristics related outcomes of 3 juvenile overt disease who underwent our Hospital recurrent typical flutter. Methods Results Of 1217 flutter procedures from 2003 to 2022, were on juvenile, otherwise healthy patients. The median patient age was 19.3 years old. All them had history paroxysmal initially terminated with electrical cardioversion. Given no pharmacological prophylaxis initiated, but subsequent recurrence decided an ablative strategy. Echocardiography and/or MRI excluded One experienced induced tachycardiomyopathy, while one previous arrhythmia relapse. conducted using standard equipment successfully, significant complications. Baseline electric recorded block conduction confirmed protocols. Conclusion Recurrent Patients exceptionally rare, seldom performed. characteristics, whom radiofrequency successfully