Key result
The Zhang ECG algorithm demonstrated the highest predictive accuracy (91.9%) for identifying the true ablation site of right ventricular outflow tract tachycardias compared to Ito, Dixit, and Joshi.
Why the study?
Which ECG algorithm provides the highest predictive accuracy for identifying the true ablation site in patients with idiopathic right ventricular outflow tract tachycardias?
Observational (n=99)
Which ECG algorithm provides the highest predictive accuracy for identifying the true ablation site in patients with idiopathic right ventricular outflow tract tachycardias?
Absolute Event Rate: 91.9% vs 77.7%
Detailed ECG algorithms, particularly the Zhang algorithm, provide superior predictive accuracy for identifying the true ablation site in idiopathic RVOT tachycardias compared to simpler algorithms.
Zhang algorithm may aid RVOT VT ablation planning; hypothesis-generating and leaves open prospective validation.
BACKGROUND: We aimed to investigate the accuracy of four algorithms in prediction of right ventricular outflow tract (RVOT) tachycardias in patients who successfully underwent radiofrequency catheter ablation. METHODS: Four algorithms; two with easy-applicability and having a memorable design (Dixit and Joshi), and two with more complex and detailed design (Ito and Zhang) were compared according to the predictive accuracy. RESULTS: Among 99 patients (mean age 36.5 ± 8.5 years, 39.4% male), there were 51 (51.5%) septal-located and 48 (48.5%) free-wall located RVOT tachycardia. Comparison of the predictive accuracy of the algorithms showed that Zhang (91.9%) was the best algorithm for prediction of either septal or free-wall located tachycardia. The second best algorithm was the Ito (77.7%) compared to Dixit (75.8%) and Joshi (70.7%). CONCLUSION: In patients with RVOT tachycardia, algorithms with a detailed design may predict the arrhythmia location better than the easy-applicable algorithms.
No takes yet. Share an insight, caveat, or question.
Selçuk et al. (2017) conducted an observational in Idiopathic right ventricular outflow tract tachycardias (n=99). Zhang and Ito ECG algorithms vs. Dixit and Joshi ECG algorithms was evaluated on Predictive accuracy of true ablation site. The Zhang ECG algorithm demonstrated the highest predictive accuracy (91.9%) for identifying the true ablation site of right ventricular outflow tract tachycardias compared to Ito, Dixit, and Joshi.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: