Navegando por Palavras-chave "Lung function tests"

Agora exibindo 1 - 2 de 2
  • Nenhuma Miniatura disponível
    Item
    Somente Metadadados
    Reference values for spirometry in preschool children
    (Soc Brasil Pediatria, 2013-07-01) Burity, Edjane F.; Pereira, Carlos A. C. [UNIFESP]; Rizzo, Jose A.; Brito, Murilo C. A.; Sarinho, Emanuel S. C.; Universidade Federal de Pernambuco (UFPE); Universidade Federal de São Paulo (UNIFESP); Fundacao Oswaldo Cruz Fiocruz
    Objectives: Reference values for lung function tests differ in samples from different countries, including values for preschoolers. the main objective of this study was to derive reference values in this population.Methods: A prospective study was conducted through a questionnaire applied to 425 preschool children aged 3 to 6 years, from schools and day-care centers in a metropolitan city in Brazil. Children were selected by simple random sampling from the aforementioned schools. Peak expiratory flow (PEF), forced vital capacity (FVC), forced expiratory volumes (FEV,, FEV0.50), forced expiratory flow (FEF25.75) and FEV1/FVC, FEV0.5/FVC and FEF25.75/FVC ratios were evaluated.Results: of the 425 children enrolled, 321 (75.6%) underwent the tests. of these, 135 (42.0%) showed acceptable results with full expiratory curves and thus were included in the regression analysis to define the reference values. Height and gender significantly influenced FVC valuesthrough linear and logarithmic regression analysis. in males, R-2 increased with the logarithmic model for FVC and FEV1, but the linear model was retained for its simplicity. the lower limits were calculated by measuring the fifth percentile residues.Conclusion: Full expiratory curves are more difficult to obtain in preschoolers. in addition to height, gender also influences the measures of FVC and FEV1. Reference values were defined for spirometry in preschool children in this population, which are applicable to similar populations. (C) 2013 Sociedade Brasileira de Pediatria. Published by Elsevier Editora Ltda. All rights reserved.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Valores de referência para espirometria em crianças pré-escolares
    (Sociedade Brasileira de Pediatria, 2013-08-01) Burity, Edjane Figueiredo; Pereira, Carlos Alberto de Castro [UNIFESP]; Rizzo, José Ângelo; Brito, Murilo C. A.; Sarinho, Emanuel Sávio Cavalcanti; Universidade Federal de Pernambuco; Universidade Federal de São Paulo (UNIFESP); UFPE Departamento de Medicina Clínica; Fundação Oswaldo Cruz Centro de Pesquisas Ageu Magalhães
    OBJECTIVES: Reference values for lung function tests differ in samples from different countries, including values for preschoolers. The main objective of this study was to derive reference values in this population. METHODS: A prospective study was conducted through a questionnaire applied to 425 preschool children aged 3 to 6 years, from schools and day-care centers in a metropolitan city in Brazil. Children were selected by simple random sampling from the aforementioned schools. Peak expiratory flow (PEF), forced vital capacity (FVC), forced expiratory volumes (FEV1, FEV0.50), forced expiratory flow (FEF25-75) and FEV1/FVC, FEV0.5/FVC and FEF25-75/FVC ratios were evaluated. RESULTS: Of the 425 children enrolled, 321 (75.6%) underwent the tests. Of these, 135 (42.0%) showed acceptable results with full expiratory curves and thus were included in the regression analysis to define the reference values. Height and gender significantly influenced FVC values through linear and logarithmic regression analysis. In males, R2 increased with the logarithmic model for FVC and FEV1, but the linear model was retained for its simplicity. The lower limits were calculated by measuring the fifth percentile residues. CONCLUSION: Full expiratory curves are more difficult to obtain in preschoolers. In addition to height, gender also influences the measures of FVC and FEV1. Reference values were defined for spirometry in preschool children in this population, which are applicable to similar populations.