Value of ventricular tachycardia score in diagnosing pre-excited tachycardia.
10.11817/j.issn.1672-7347.2019.190139
- Author:
Wenjuan WANG
1
;
Yu LI
2
;
Min ZHANG
1
;
Chunhua LIU
1
;
Huiling GUO
2
;
Hua YANG
3
;
Zhiqing XIANG
4
;
Yong JIANG
4
;
Xuehui ZHAO
3
;
Jihong GUO
5
Author Information
1. Department of Cardiology, Third Xiangya Hospital, Central South University, Changsha 410013, China.
2. Department of Cardiopulmonary Function, Hunan Cancer Hospital, Changsha 410013, China.
3. Department of Cardiology, Hunan Provincial People's Hospital, Changsha 410002, China.
4. Department of Heart Function Examination, Xiangxi Tujia and Miao Autonomous Prefecture People's Hospital, Jishou Hunan 416000, China.
5. Department of Cardiology, Peking University People's Hospital, Beijing 100044, China.
- Publication Type:Journal Article
- MeSH:
Algorithms;
Diagnosis, Differential;
Electrocardiography;
Humans;
Sensitivity and Specificity;
Tachycardia, Ventricular;
diagnosis
- From:
Journal of Central South University(Medical Sciences)
2019;44(9):1041-1047
- CountryChina
- Language:Chinese
-
Abstract:
To investigate the value of ventricular tachycardia (VT) score in diagnosing pre-excited tachycardia.
Methods: Twelve-lead electrocardiograph results were obtained from 30 patients at pre-excited tachycardia attacking stage who were diagnosed by electrophysiology. We scored pre-excitation tachycardia based on the VT score. To analyze the electrocardiogram of pre-excited tachycardia using 7 diagnostic indicators of the VT score and calculate the specificity of 7 diagnostic indicators and right superior axis (-90º to ±180º), the differences were compared among VT score of 2 points and brugada, Wellens, and Vereckei algorithms in diagnosing pre-excited tachycardia. According to the specificity of Vereckei, Wellens, and Brugada algorithms, and VT scores from low to high, their prediction value and differences were analyzed.
Results: Single indicator such as atrioventricular (AV) dissociation or right superior axis (-90º to ±180º) showed the highest specificity (100%) for identifying pre-excited tachycardia. No patient with VT score was ≥3 points, and the specificity was 100%. The specificity of VT score of 2 point was higher than that of Brugada, Wellens, or Vereckei algorithms in the diagnosing pre-excited tachycardia (76.7% vs 50.0%, 23.3% or 20.0%, P<0.05). The specificity of Vereckei, Wellens, and Brugada algorithms and VT score were gradually increased after each of stepwise individually eliminated VT (20.0%, 40.0%, 66.7%, 83.3%, P<0.05). However, there was no significant difference in the specificity in the remaining false positive cases between the 4 methods and VT score.
Conclusion: VT score ≥3 points can identify pre-excited tachycardia and VT with 100% specificity. VT score of 2 points cannot completely distinguish pre-excited tachycardia from VT, but specificity of VT score with 2 points is obviously higher than that of Brugada, Wellens, and Vereckei algorithms.
