Estudo do comportamento da atividade nervosa autonômica por meio da análise da variabilidade da freqüência cardíaca em indivíduos portadores de insuficiência cardíaca congestiva classe funcional II e III durante o sono

• Main Authors: Indiamara O. F. Dal Magro, Patrícia Farias de Sá, Gerda Coelho e Silva, Lílian Chystianne Ginnasi, Sergio Roberto Nacif, Júlio César Mendes de Oliveira, Luciana M. M. Sampaio, Luis Vicente F. Oliveira, Alderico R. Paula Jr.
• Format: Article
• Language: Portuguese
• Published: Universidade Nove de Julho 2008-01-01
• Series: ConScientiae Saúde
• Online Access: http://www.redalyc.org/articulo.oa?id=92911724004
• ISSN: 1677-1028; 1983-9324

Congestive heart failure (CHF) is currently a major public health problem worldwide. The analysis of the activity of the autonomic nervous system provides important information regarding prognosis, pathogenesis and treatment strategy of cardiovascular disorders. The objective was to verify the behavior of the autonomic nervous system in patients with CHF, functional class II and III, during sleep. 13 subjects of both sexes, with CHF functional class II and III (NYHA) participated. The participants of the research were submitted to polysomnography and nocturnal basal heart rate variability, and were divided into two groups according to the index of apnea / Hippo per hour (AHI) (<30 and> 30). The results showed a high level of sympathetic activity in these patients. We concluded that it was effective the use of analysis of heart rate variability to identify the behavior of the autonomic nervous system.