Change in P wave on electrocardiogram and its diagnostic value in children and adolescents with cardioinhibitory vasovagal syncope.
- Author:
Shuang-Shuang WANG
1
;
Xiu-Ying YI
;
Qing JI
;
Yu-Wen WANG
;
Cheng WANG
Author Information
1. Department of Pediatric Cardiovasology, Children's Medical Center, Second Xiangya Hospital, Central South University, Changsha 410011, China. wangcheng2nd@csu.edu.cn.
- Publication Type:Journal Article
- MeSH:
Adolescent;
Child;
Electrocardiography;
Heart Rate;
Humans;
Syncope, Vasovagal
- From:
Chinese Journal of Contemporary Pediatrics
2019;21(11):1084-1088
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To study the change in P wave on electrocardiogram and its diagnostic value in children and adolescents with cardioinhibitory vasovagal syncope (VVS-CI).
METHODS:A total of 43 children and adolescents who were diagnosed with VVS-CI were enrolled as the VVS-CI group, and 43 healthy children and adolescents were enrolled as the control group. P wave duration and P wave voltage were measured by 12-lead electrocardiography in a basal state, and the changes were analyzed.
RESULTS:Compared with the control group, the VVS-CI group had a significantly lower heart rate (P<0.05) and significantly longer P wave duration (Pwd), P wave maximum duration (Pmax), and corrected P wave maximum duration (Pcmax), as well as significantly higher P wave dispersion (Pd) and corrected P wave dispersion (Pcd) (P<0.05). Pwd, Pmax, Pd, Pcmax and Pcd had a certain diagnostic value in children and adolescents with VVS-CI (P<0.05): Pwd had a sensitivity of 69.77% and a specificity of 83.72% at the optimal cut-off value of 78.49 ms; Pmax had a sensitivity of 76.74% and a specificity of 90.70% at the optimal cut-off value of 93.39 ms; Pd had a sensitivity of 95.35% and a specificity of 69.77% at the optimal cut-off value of 27.42 ms; Pcmax had a sensitivity of 46.51% and a specificity of 88.37% at the optimal cut-off value of 120.90 ms; Pcd had a sensitivity of 83.72% and a specificity of 72.09% at the optimal cut-off value of 36.37 ms.
CONCLUSIONS:Children and adolescents with VVS-CI have significantly increased Pwd, Pmax, Pd, Pcmax, and Pcd, which may indicate abnormal atrial electrical activity. The cut-off value of P wave has a certain diagnostic value in VVS-CI.
