Atrial electrical abnormality in patients with Brugada syndrome assessed by signal-averaged electrocardiography.
Indian Heart J
; 69(6): 714-719, 2017.
Article
em En
| MEDLINE
| ID: mdl-29174247
ABSTRACT
BACKGROUND:
Ventricular fibrillation and atrial fibrillation are well-known arrhythmias in patients with Brugada syndrome. This study evaluated the characteristics of the atrial arrhythmogenic substrate using the signal-averaged electrogram (SAECG) in patients with Brugada syndrome.METHODS:
SAECGs were performed during normal sinus rhythm in 23 normal volunteers (control group), 21 patients with paroxysmal atrial fibrillation (PAF; PAF group), and 21 with Brugada syndrome (Brugada group).RESULTS:
The filtered P wave duration (fPd) in the control, Brugada, and PAF groups was 113.9±12.9ms, 125.3±15.0ms, and 137.1±16.3ms, respectively. The fPd in the PAF group was significantly longer compared to that in the control and Brugada groups (p<0.05). The fPd in the Brugada group was significantly longer than that in the control group (p<0.05) and significantly shorter than that in the PAF group (p<0.05).CONCLUSION:
Patients with Brugada syndrome had abnormal P waves on the SAECG. The abnormal P waves on the SAECG in Brugada syndrome patients may have intermediate characteristics between control and PAF patients.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Eletrocardiografia
/
Síndrome de Brugada
/
Átrios do Coração
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Sistema de Condução Cardíaco
/
Frequência Cardíaca
Tipo de estudo:
Diagnostic_studies
/
Observational_studies
/
Prognostic_studies
Limite:
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Indian Heart J
Ano de publicação:
2017
Tipo de documento:
Article