The correlation between wide QRS of transesophageal atrial pacing and implicit ventricular pre-excitation
10.3760/cma.j.issn.1008-6706.2014.10.001
- VernacularTitle:食管心房调搏宽 QRS 波与隐性心室预激的相关性
- Author:
Jinyi XU
;
Rui WU
;
Qingyi WANG
;
Wentao WANG
;
Han LI
- Publication Type:Journal Article
- Keywords:
Echocardiography,transesophageal;
Heart ventricles;
Pre-excitation syndromes
- From:
Chinese Journal of Primary Medicine and Pharmacy
2014;(10):1441-1442,1443
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the correlation between wide QRS of transesophageal atrial pacing (TEAP) and implicit ventricular pre-excitation.Methods 77 patients tested by TEAP were divided into two groups according to the ECG results .45 patients in group Ⅰhad normal electrocardiogram .32 patients in group Ⅱhad ven-tricular pre-excitation.In group Ⅰ,TEAP results showed that electric pulse wave (S wave) was followed by intermit-tent or continuous wide QRS complex .At the same time , the results of group Ⅰ were compared with the results of groupⅡ.Results (1)The patients of group Ⅰwere excluded the presence of concealed accessory pathway by intra-cavitary electrocardiographic test,among them 20 patients (group ⅠA) were ventricular pacing,the test results dis-played that S wave was followed by wide QRS complex exhibiting a pattern of right bundle branch block ( RBBB) ,SR interval was 0 s;SR intervals of 25 patients (groupⅠB) were not fixed,SR interval was (0.07 ±0.01)s,S wave had no concern with QRS wave ,the wide QRS complex was premature ventricular contraction ,QRS wave shapes were dif-ferent according to the different sites of pacing origin .(2)In groupⅡ,the test results displayed that S wave was close-ly followed by the atrial depolarization wave P ,and there was a wide QRS complex with pre-excitation wave at the be-ginning after a atrioventricular conduction time shorter than normal ,SR interval was fixed ,SR interval was (0.08 ±0. 03)s,at the same time,different parts of accessory pathway QRS complex had different morphological characteristics . (3) SR interval of ⅠA group compared with groupⅠB and groupⅡ,the differences were statistically significant ( t=2.97,3.02,all P<0.05);SR interval had no statistically significant difference between group ⅠB and groupⅡ(t=2.66,P>0.05).Conclusion When TEAP displaying pacing wide QRS complex ,in order to avoid bringing misdiag-nosis,TEAP results should be analyzed comprehensively rather than blindly believing that the reason was concealed accessory pathway .
