Evaluation of five algorithms in predicting the sublocalisation of right ventricular outflow tract arrhythmia (RVOTA) when compared to 3D electroanatomical mapping origin

Abstract Introduction The majority of idiopathic ventricular arrythmias arise from the right outflow tract (RVOT) and they represent nearly 10% all tachycardia (VT) admissions. It is paramount to precisely predict origin RVOT arrhythmias define appropriate approach before ablation procedure. Conventional 12-lead electrocardiogram (ECG) a useful tool for analysing cardiac arrhythmias, numerous ECG algorithms predicting have been reported. Purpose To compare predictive accuracy five different as verified by successful site using 3D electroanatomical non-contact mapping in patients with symptomatic asymptomatic but high burden tachycardias. Methods 28 consecutive admitted radiofrequency catheter asymptomatic, premature contractions (PVC) were recruited this study. All had previous failed or intolerant beta-blocker and/or at least one class IC anti-arrhythmic agents, normal left ejection fraction. documented monomorphic PVC bundle branch block morphology an inferior axis. Concordance arrhythmia based on algorithm system further evaluated. Of algorithms, two easy-applicability having memorable design (Dixit Joshi) three more complex detailed (Ito, Zhang, Pytkowski) selected comparisons. Results Assessment diagnostic showed that each only moderate accuracy, greatest was observed proposed Pytkowski when assessed general cardiologist Dixit evaluated electrophysiologist. However, compared their specificity, sensitivity, no significant differences found (p=0.99). Conclusions published location similar terms sensitivity. In our study, exhibits best sensitivity among while precise evaluation performed electrophysiologists cardiologists. Funding Acknowledgement Type funding sources: None.