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Date Published: 27/04/2023
Abstract Views: 339
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DOI: https://doi.org/10.51298/vmj.v525i2.5250
Issue
Vol. 525 No. 2 (2023)
Section
Các bài báo
How to Cite
Phan , Đình P. ., Lê, V. K. ., Trần, T. V. ., Nguyễn, D. L. ., Đặng, V. P. ., Nguyễn, Đinh H. P. ., Nguyễn, T. V. ., & Bùi , V. N. (2023). TO ASSESS THE PREDICTIVE UTILITY OF UNIPOLAR AND BIPOLAR ELECTROGRAM IN OTVA MAPPING AND ABLATION. Vietnam Medical Journal, 525(2). https://doi.org/10.51298/vmj.v525i2.5250

TO ASSESS THE PREDICTIVE UTILITY OF UNIPOLAR AND BIPOLAR ELECTROGRAM IN OTVA MAPPING AND ABLATION

Đình Phong Phan 1,2,, Võ Kiên Lê1, Tuấn Việt Trần1,2, Duy Linh Nguyễn1, Việt Phong Đặng1, Đinh Hồng Phúc Nguyễn2, Tuấn Việt Nguyễn2, Văn Nhơn Bùi 2
1 Bach Mai hospital
2 Hanoi medical university

Main Article Content

Abstract

Objectives: This study aims to assess the predictive utility of unipolar and bipolar electrogram in OTVA mapping and ablation. Results: In total 152 targets in RVOT of 76 patients: (1) 104 (68.2%) locations which record the ventricular activation. (2) The average of R_amp (the amplitude of the first positive peak), N_amp (the amplitude of the nadir) and Maxslope were 0,20 ± 0,39, 3,34 ± 3,04 và 1,45 ± 1,76, respectively. (3) The average R-Ratio and D-Max (MaxSlope) were 0,09 ± 0,15 và 16,03 ± 4,95, respectively. The unipolar electrogram criteria have meaning predictive of the high-rate success target in the right ventricular outflow tract including (1) D-Max index (the highest meaning with AUC = 0.75 95% CI 0.67 – 0.83) (2) The appreance of QS morphology (the highest sensitivity of 93%), D-Max index (the highest specify of 65%). (3) Combining unipolar electrocardiographic parameters with EAT index increases the predictive value of locating the target site in ventricular arrythmia ablation initiated from the right ventricular outflow tract. Conclusions: Unipolar EGM-derived quantitative criteria demonstrated a high value for localizing the target site and can be combined with bipolar EGM characteristics to increase the success rate of OT-PVC ablation procedures.

Article Details

Keywords

Catheter ablation; Electrophysiology mapping; Ventricular arrhythmia; Outflow tract

References

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