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Heart rate profile during exercise in patients with early repolarization / 中华医学杂志(英文版)
Chinese Medical Journal ; (24): 2305-2309, 2010.
Artigo em Inglês | WPRIM | ID: wpr-237459
ABSTRACT
<p><b>BACKGROUND</b>Both early repolarization and altered heart rate profile are associated with sudden death. In this study, we aimed to demonstrate an association between early repolarization and heart rate profile during exercise.</p><p><b>METHODS</b>A total of 84 subjects were included in the study. Comparable 44 subjects with early repolarization and 40 subjects with normal electrocardiogram underwent exercise stress testing. Resting heart rate, maximum heart rate, heart rate increment and decrement were analyzed.</p><p><b>RESULTS</b>Both groups were comparable for baseline characteristics including resting heart rate. Maximum heart rate, heart rate increment and heart rate decrement of the subjects in early repolarization group had significantly decreased maximum heart rate, heart rate increment and heart rate decrement compared to control group (all P < 0.05). The lower heart rate increment (< 106 beats/min) and heart rate decrement (< 95 beats/min) were significantly associated with the presence of early repolarization. After adjustment for age and sex, the multiple-adjusted OR of the risk of presence of early repolarization was 2.98 (95%CI 1.21-7.34) (P = 0.018) and 7.73 (95%CI 2.84-21.03) (P < 0.001) for the lower heart rate increment and heart rate decrement compared to higher levels, respectively.</p><p><b>CONCLUSIONS</b>Subjects with early repolarization have altered heart rate profile during exercise compared to control subjects. This can be related to sudden death.</p>
Assuntos
Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Fisiologia / Sistema Nervoso Autônomo / Exercício Físico / Estudos de Casos e Controles / Eletrocardiografia / Teste de Esforço / Sistema de Condução Cardíaco / Frequência Cardíaca Tipo de estudo: Estudo observacional / Fatores de risco Limite: Adulto / Feminino / Humanos / Masculino Idioma: Inglês Revista: Chinese Medical Journal Ano de publicação: 2010 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Fisiologia / Sistema Nervoso Autônomo / Exercício Físico / Estudos de Casos e Controles / Eletrocardiografia / Teste de Esforço / Sistema de Condução Cardíaco / Frequência Cardíaca Tipo de estudo: Estudo observacional / Fatores de risco Limite: Adulto / Feminino / Humanos / Masculino Idioma: Inglês Revista: Chinese Medical Journal Ano de publicação: 2010 Tipo de documento: Artigo