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Clinical and functional correlations of the difference between slow vital capacity and FVC.
Fernandez, Jonathan Jerias; Castellano, Maria Vera Cruz de Oliveira; Vianna, Flavia de Almeida Filardo; Nacif, Sérgio Roberto; Rodrigues Junior, Roberto; Rodrigues, Sílvia Carla Sousa.
Afiliación
  • Fernandez JJ; . Laboratório de Função Pulmonar, Instituto de Assistência ao Servidor Público Estadual de São Paulo - IAMSPE - São Paulo (SP), Brasil.
  • Castellano MVCO; . Universidade Federal do ABC, Santo André (SP) Brasil.
  • Vianna FAF; . Serviço de Doenças do Aparelho Respiratório, Hospital do Servidor Público Estadual de São Paulo, São Paulo (SP) Brasil.
  • Nacif SR; . Serviço de Doenças do Aparelho Respiratório, Hospital do Servidor Público Estadual de São Paulo, São Paulo (SP) Brasil.
  • Rodrigues Junior R; . Laboratório de Função Pulmonar, Instituto de Assistência ao Servidor Público Estadual de São Paulo - IAMSPE - São Paulo (SP), Brasil.
  • Rodrigues SCS; . Disciplina de Pneumologia, Faculdade de Medicina do ABC, Santo André (SP)Brasil.
J Bras Pneumol ; 46(1): e20180328, 2020.
Article en En, Pt | MEDLINE | ID: mdl-31859814
OBJECTIVE: To evaluate the relationship that the difference between slow vital capacity (SVC) and FVC (ΔSVC-FVC) has with demographic, clinical, and pulmonary function data. METHODS: This was an analytical cross-sectional study in which participants completed a respiratory health questionnaire, as well as undergoing spirometry and plethysmography. The sample was divided into two groups: ΔSVC-FVC ≥ 200 mL and ΔSVC-FVC < 200 mL. The intergroup correlations were analyzed, and binomial logistic regression analysis was performed. RESULTS: The sample comprised 187 individuals. In the sample as a whole, the mean ΔSVC-FVC was 0.17 ± 0.14 L, and 61 individuals (32.62%) had a ΔSVC-FVC ≥ 200 mL. The use of an SVC maneuver reduced the prevalence of nonspecific lung disease and of normal spirometry results by revealing obstructive lung disease (OLD). In the final logistic regression model (adjusted for weight and body mass index > 30 kg/m2), OLD and findings of air trapping (high functional residual capacity and a low inspiratory capacity/TLC ratio) were predictors of a ΔSVC-FVC ≥ 200 mL. The chance of a bronchodilator response was found to be greater in the ΔSVC-FVC ≥ 200 mL group: for FEV1 (OR = 4.38; 95% CI: 1.45-13.26); and for FVC (OR = 3.83; 95% CI: 1.26-11.71). CONCLUSIONS: The use of an SVC maneuver appears to decrease the prevalence of nonspecific lung disease and of normal spirometry results. Individuals with a ΔSVC-FVC ≥ 200 mL, which is probably the result of OLD and air trapping, are apparently more likely to respond to bronchodilator administration.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Capacidad Vital / Volumen Espiratorio Forzado / Enfermedades Pulmonares Obstructivas Tipo de estudio: Observational_studies / Prevalence_studies / Prognostic_studies / Risk_factors_studies Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En / Pt Revista: J Bras Pneumol Año: 2020 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Capacidad Vital / Volumen Espiratorio Forzado / Enfermedades Pulmonares Obstructivas Tipo de estudio: Observational_studies / Prevalence_studies / Prognostic_studies / Risk_factors_studies Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En / Pt Revista: J Bras Pneumol Año: 2020 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil