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Date Published: 17/10/2022
Abstract Views: 202
Views PDF: 138
DOI: https://doi.org/10.51298/vmj.v519i1.3530
Issue
Vol. 519 No. 1 (2022)
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Các bài báo
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Tuấn Việt, N. ., Tuấn Việt, T. ., Duy Linh, N. ., & Đình Phong, P. . (2022). THE VALUE OF QRS’S AMPLITUDE IN INITIAL 40MS CALCULATED IN V2 LEAD (V2QRS I40) IN PREDICTING THE LOCATION OF THE OUTFLOW TRACT (OT) VENTRICULAR ARRHYTHMIA (VA). Vietnam Medical Journal, 519(1). https://doi.org/10.51298/vmj.v519i1.3530

THE VALUE OF QRS’S AMPLITUDE IN INITIAL 40MS CALCULATED IN V2 LEAD (V2QRS I40) IN PREDICTING THE LOCATION OF THE OUTFLOW TRACT (OT) VENTRICULAR ARRHYTHMIA (VA)

Nguyễn Tuấn Việt1, Trần Tuấn Việt1,2, Nguyễn Duy Linh1, Phan Đình Phong1,2,
1 Vietnam National Heart Institute, Bach Mai Hospital
2 Hanoi Medical University

Main Article Content

Abstract

Objective: The purpose of this study was to indicate the value of QRS’s amplitude in initial 40ms calculated in V2 Lead (V2QRS i40) in predicting the location of the outflow tract (OT) ventricular arrhythmia (VA). Methods: 84 patients with successful ablation in the right ventricular outflow tract (RVOT) (n = 68) and left ventricular outflow tract (LVOT) (n= 16) was. The amplitude of QRS in an initial 40 ms (V2QRS i40 ms) was calculated in EPS. Results: QRS i40 of identical precordial leads were not significantly different between RVOT and LVOT groups except V2QRSi40. V2QRSi40 exhibited the greatest area under the curve of 0.882, with a cut-off ≥ 0.535 mV predicting LVOT origin (sensitivity 87.5% and specificity 89.7%). V2QRSi 40ms outperformed the previous criteria including V2S/V3R and TZ index, but not over the V2 transition radio (AUC = 0.949). Conclusion: V2QRSi40 is a valued ECG criterion to predict  OT-VA origin.

Article Details

Keywords

Location of ventricular arrhythmia (VA), right ventricular outflow tract (RVOT), left ventricular outflow tract (LVOT), the amplitude of QRS in initial 40ms calculated in V2 Lead (V2QRSi40)

References

1. Robert.D. Anderson, Saurabh Kumar, et al. Differentiating Right- and Left-Sided Outflow Tract Ventricular Arrhythmias Classical ECG Signatures and Prediction Algorithms. Circ Arrhythm Electrophysiol. 2019;12(6):e007392.
2. Jiao Z.Y., Li Y.B., Mao J., et al. Differentiating origins of outflow tract ventricular arrhythmias: a comparison of three different electrocardiographic algorithms. Braz J Med Biol Res. 2016;49(5):356-379.
3. Yu Xia, Zheng Liu, Jun Liu. Amplitude of QRS complex within initial 40 ms in V2 (V2QRSi40): Novel electrocardiographic criterion for predicting accurate localization of outflow tract ventricular arrhythmia origin. Heart Rhythm. 2020;17(12):2164-2171.
4. Asirvatham SJ. Correlative anatomy for the invasive elec- trophysiologist: outflow tract and supravalvar arrhythmia. J Cardiovasc Electrophysiol. 2009;20:955-968.
5. Kaypakli O., Koca H., Sahin DY., et al. S-R difference in V1-V2 is a novel criterion for differentiating the left from right ventricular outflow tract arrhythmias. Ann Noninvasive Electrocardiol. Published online 2018:23:e12516.
6. He Z, Liu M, Yu M, Li J, Xu T, Zhu J, O’Gara MC, O’Meara M, Ye H, Tan X. An electrocardiographic diagnostic model for differentiating left from right ventricular outflow tract tachycardia origin. J Cardiovasc Electrophysiol. 2018;29:908-915.
7. Phan Đình Phong. Nghiên Cứu Điện Sinh Lý Học Tim Của Rối Loạn Nhịp Thất Khởi Phát Từ Xoang Valsava và Kết Quả Triệt Đốt Bằng Sóng Có Năng Lượng Radio. Luận văn Tiến sỹ Y học. Trường Đại học Y hà Nội; 2015.
8. Yoshida N., Inden Y., Uchikawa T, et al. Novel transitional zone index allows more accurate differentiation between idiopathic right ventricular outflow tract and aortic sinus cusp ventricular arrhythmias. Heart Rhythm. 2011;8(3):349-356.