<![CDATA[Background. Right Ventricular Outflow Tract (RVOT) tachycardia is frequentlyfound in clinical practice. Despite of its good prognosis no need itusually affects the reproductive age (20-40 years) and can be very symptomatic.Radio frequency ablation (RFA) is a recommended therapeuticoption of RVOT tachycardia. The aim of this study is to evaluate longtermresultsof RFA in National Cardiovasxular Center Harapan Kita.Method. A retrospective cohort study conducted to subjects with RVOTtachycardia who underwent RFA during period of 2005-2011. Clinicalcharacteristics are revealed from medical record and electrophysiologycharacteristics are revealed from electrophysiology recording system(PruckaTMandWorkmateTM). ECG morphology assessed by 2 observersusing digimatic calliper MitutoyoTM. Patients that received pharmacologicaltherapy act as control group. All patients are observed up to 1 year.Results. Sixty two patients underwent RFA (mean age of 43,56 ± 11,77year,46 female). ECG morphologies are all left bundle branch blok (LBBB),inferior axis, transtitional zone ? V4. Based on ECG morphology, septal siteare majority of cases. Mean EA (earliest activation) is 41,26 ± 16,94 ms,median 39,50 ms. An acute successful rate of RFA is 79%.Long termsuccessrate is 83,9 % as compare to only 40,9% in medical therapy group(RRR77%, p=0.001). Septal origin site is an independent factor of success ofRFA RVOT tachycardia.Conclusion. RFA of RVOT tachycardia is safe and effective with betterlongterm result as compare to pharmacological therapy.]]>
