Comparison of the presence of fragmented QRS complexes in the inferior versus the anterior leads for predicting coronary artery disease severity.
Rev Port Cardiol
; 36(2): 89-93, 2017 Feb.
Article
em En, Pt
| MEDLINE
| ID: mdl-28153633
ABSTRACT
INTRODUCTION:
Fragmented QRS complexes (fQRS) are a sign of myocardial scar and are associated with adverse outcomes and mortality in patients with coronary artery disease (CAD). However, little is known about the significance of fQRS or of their localization on electrocardiography (ECG) in patients without known CAD. We aimed to investigate the association between localization of fQRS on ECG and CAD severity in patients undergoing a first diagnostic coronary angiography.METHODS:
We enrolled 135 consecutive patients who had a narrow fQRS on ECG and underwent a first diagnostic coronary angiography. Patients were divided into two groups based on localization of fQRS on ECG (group 1 fQRS in the inferior leads, group 2 fQRS in the anterior leads). The groups were compared regarding the presence of significant CAD, multivessel disease (MVD) and SYNTAX score (SXscore).RESULTS:
Eighty-six (63.7%) patients had fQRS in the inferior leads and 49 (36.3%) had fQRS in the anterior leads. There was no statistically significant difference between the groups regarding presence of significant CAD (47.7% vs. 51%, p=0.708). However, the incidence of MVD was significantly higher in group 2 compared to group 1 (10.5% vs. 28.6%, p=0.007). The median SXscore (6 [3,12] vs. 8 [4,24], p=0.047), and incidence of patients with SXscore >22 were significantly higher in group 2 compared to group 1 (3.5% vs. 20.4%, p=0.009).CONCLUSION:
The presence of fQRS in the anterior leads may indicate more severe CAD compared to fQRS in the inferior leads in patients undergoing a first diagnostic coronary angiography.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doença da Artéria Coronariana
/
Eletrocardiografia
Tipo de estudo:
Prognostic_studies
/
Risk_factors_studies
Limite:
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
/
Pt
Revista:
Rev Port Cardiol
Ano de publicação:
2017
Tipo de documento:
Article