Data/hora: 05/06/2024 10:16:30

Provedor de dados: | 45
País: | Brazil
Título: | Heart rate variability and arrhythmias evaluated with Holter in dogs with degenerative mitral valve disease
Autores: | Oliveira,M.S.; Muzzi,R.A.L.; Araújo,R.B.; Muzzi,L.A.L.; Ferreira,D.F.; Silva,E.F.
Data: | 2014-04-01
Ano: | 2014
Palavras-chave: | Electrocardiography; Heart failure; Frequency-domain; Cardiology.
Resumo: | Cardiac diseases promote alterations in the autonomic control of the heart, leading to an increase in heart rate and, as a result, a decrease in heart rate variability (HRV).The aim of this study was to evaluate if the development of heart failure secondary to degenerative mitral valve disease (DMVD) concurs with changes in autonomic modulation of heart rhythm which are assessed by long electrocardiography examination (Holter). Dogs were evaluated by clinical examination and echocardiography in order to be categorized into the following groups: Control (healthy; n=6), DMVD (disease without heart failure; n=8), and DMVD heart failure (disease with heart failure; n=13). Arrhythmias and frequency domain HRV were determined by Holter. Diseased animals, when compared to healthy, had significantly lower total power, which indicates overall HRV. DMVD heart failure dogs also showed other disturbances such as high incidence of supraventricular arrhythmias, high heart rate, little amount of pauses (2.0s long between consecutive heartbeats), longer time in tachycardia, shorter time in bradycardia, low high frequency (parasympathetic control), and high low frequency (sympathetic and parasympathetic control) when compared to control (p&lt;0.05). In DMVD dogs, Holter-derived variables changed with the development of heart failure.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000200015
Editor: | Universidade Federal de Minas Gerais, Escola de Veterinária
Relação: | 10.1590/1678-41626097
Formato: | text/html
Fonte: | Arquivo Brasileiro de Medicina Veterinária e Zootecnia  v.66 n.2 2014
Fonte: | info:eu-repo/semantics/openAccess