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Vol. 15. Issue 5.
Pages 875-890 (September - October 2009)
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Vol. 15. Issue 5.
Pages 875-890 (September - October 2009)
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Correlations between respiratory and functional variables in heart failure
Correlações entre variáveis respiratórias e funcionais na insuficiência cardíaca
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Fábio Cangeri Di Naso1,6,7,
Corresponding author
fdinaso@yahoo.com.br

Correspondence to/Correspondência: Rua Azevedo Sodré, 212/201 – Passo D’areia – 91340-140 Porto Alegre, RS – Brasil. Telefone: (51) 34073222 / 81883585.
, Juliana Saraiva Pereira2,6,7, Alexandre Simões Dias3,6,7, Luiz Alberto Forgiarini Junior4,6,7, Mariane Borba Monteiro5,6,7
1 Fisioterapeuta graduado no Curso de Fisioterapia do Centro Universitário Metodista-IPA e aluno do Programa de Pós-Graduação em Ciências Biológicas (Mestrado)/Physiotherapy graduate, Physiotherapy course, Centro Universitário Metodista-IPA, student, MsC in Biology Sciences
2 Fisioterapeuta graduada no Curso de Fisioterapia do Centro Universitário Metodista-IPA/Physiotherapy graduate, Physiotherapy course, Centro Universitário Metodista-IPA
3 Fisioterapeuta, Doutor em Ciências Biológicas, Coordenador do Programa de Pós-Graduação em Reabilitação e Inclusão do Centro Universitário Metodista-IPA/Physiotherapist, PhD Biology Sciences, Coordinator, Post-Graduate Programme in Rehabilitation and Inclusion, Centro Universitário Metodista-IPA
4 Fisioterapeuta graduado no Curso de Fisioterapia do Centro Universitário Metodista-IPA e aluno do Programa de Pós-graduação em Ciências Pneumológicas (Doutorado)/Physiotherapy graduate, Physiotherapy course, Centro Universitário Metodista-IPA, student, PhD in Biology Sciences
5 Fisioterapeuta, Mestre em Ciências Médicas, Professora do Curso de Fisioterapia do Centro Universitário Metodista-IPA/Physiotherapist, MsC, Medical Sciences, Professor, Physiotherapy course, Centro Universitário Metodista-IPA
6 Centro Universitário Metodista – IPA/ Curso de Fisioterapia/Grupo de Pesquisa Programas Especiais em Saúde/Centro Universitário Metodista – IPA/ Physiotherapy course/Special Health Programmes Research Group
7 Complexo Hospitalar Santa Casa de Porto Alegre – Ambulatório de Insuficiência Cardíaca Porto Alegre, RS– Brasil
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Article information
Abstract
Background

Respiratory alterations can impact on the functional performance of patients with heart failure.

Aim

To correlate maximum inspiratory muscular force and lung function variables with functional capacity in heart failure patients.

Methods

A transversal study January-July 2007 with 42 chronic heart disease patients (28 males) with no prior pulmonary illness. The patients were in New York Heart Association Functional Class I, II and III. The variables used were maximum inspiratory pressure, forced vital capacity and forced expiratory volume in the first second. Respiratory variables measured were distance covered in the six-minute walk test, NYHA functional class and the physical functioning domain of the Short Form-36 Quality of Life Questionnaire.

Results

Maximum inspiratory pressure correlated with the six-minute walk test (r=0.543 and p<0.001), functional capacity (r=−0.566 and p<0.001) and the physical functioning domain score of the Short Form-36 (r=0.459 and p=0.002). The same was true of forced vital capacity and the six-minute walk test (r=0.501 and p=0.001), functional capacity (r=−0.477 and p=0.001) and Short Form-36 (r=0.314 and p=0.043) variables. Forced expiratory volume correlated with the distance covered in the six-minute walk test (r=0.514 and p<0.001) and functional capacity (r=−0.383 and p=0.012).

Conclusion

Lung function and inspiratory muscular force respiratory variables correlated with functional variables in patients with heart failure.

Key-words:
Heart failure
inspiratory muscles
lung function
functional capacity
quality of life
Resumo
Fundamento

Alterações respiratórias podem influenciar o desempenho funcional em doentes com insuficiência cardíaca (IC).

Objectivo

Correlacionar a força muscular inspiratória máxima (PImax) e as variáveis da função pulmonar com a capacidade funcional em doentes com IC.

Métodos

Estudo transversal realizado de Janeiro a Julho de 2007 incluindo 42 doentes com IC crónica (28 homens) que não apresentavam doença pulmonar prévia. Os doentes pertenciam às classes funcionais I, II e III segundo a NYHA (New York Heart Association). As variáveis respiratórias mensuradas foram a PImax, a CVF (capacidade vital forçada) e o VEF1(volume expiratório forçado no 1.° segundo). A distância percorrida no teste da caminhada dos seis minutos (TC6M), a classe funcional (CF) e o domínio referente à capacidade funcional do questionário de qualidade de vida Short Form-36 (SF-36) foram as variáveis funcionais utilizadas.

Resultados

A PImax correlacionou-se com a TC6M (r=0,543 e p<0,001), com a CF (r=−0,566 e p<0,001) e com a pontuação do domínio capacidade funcional do SF-36 (r=0,459 e p=0,002). O mesmo ocorre com a CVF e as variáveis TC6M (r=0,501 e p=0,001), CF (r=−0,477 e p=0,001) e SF-36 (r=0,314 e p=0,043). O VEF1 apresentou correlação com a TC6M (r=0,514 e p<0,001) e com a CF (r=−0,383 e p=0,012).

Conclusão

Variáveis respiratórias referentes à função pulmonar e à força muscular inspiratória correlacionam com variáveis funcionais em doentes com IC.

Palavras-chave:
Insuficiência cardíaca
músculos respiratórios
função pulmonar
capacidade funcional
qualidade de vida
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Copyright © 2009. Sociedade Portuguesa de Pneumologia
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