OBJECTIVE: To describe spirometric reference equations for healthy Brazilian adults who have never smoked and to compare the predicted values with those derived in 1992. METHODS: Reference equations for spirometry were derived in 270 men and 373 women living in eight cities in Brazil. Ages ranged from 20 to 85 years in women and from 26 to 86 years in men. Spirometry examinations followed the recommendations of the Brazilian Thoracic Society. Lower limits were derived by the analysis of the fifth percentiles of the residuals. RESULTS: Forced vital capacity (FVC), forced expiratory volume in one second (FEV1), FEV1/FVC and FEV1/forced expiratory volume in six seconds (FEV6) were best fitted by linear regression. Flows were best fitted using log equations. For both genders, greater height resulted in lower values for FEV1/FVC, FEV1/FEV6 and flow/FVC ratios. The reference values for FEV1 and FVC in the present study were higher than those derived for Brazilian adults in 1992. CONCLUSION: New predicted values for forced spirometry were obtained in a sample of white Brazilians. The values are greater than those obtained in 1992, probably due to technical factors.
OBJECTIVE: To describe spirometric reference equations for healthy Brazilian adults who have never smoked and to compare the predicted values with those derived in 1992. METHODS: Reference equations for spirometry were derived in 270 men and 373 women living in eight cities in Brazil. Ages ranged from 20 to 85 years in women and from 26 to 86 years in men. Spirometry examinations followed the recommendations of the Brazilian Thoracic Society. Lower limits were derived by the analysis of the fifth percentiles of the residuals. RESULTS: Forced vital capacity (FVC), forced expiratory volume in one second (FEV1), FEV1/FVC and FEV1/forced expiratory volume in six seconds (FEV6) were best fitted by linear regression. Flows were best fitted using log equations. For both genders, greater height resulted in lower values for FEV1/FVC, FEV1/FEV6 and flow/FVC ratios. The reference values for FEV1 and FVC in the present study were higher than those derived for Brazilian adults in 1992. CONCLUSION: New predicted values for forced spirometry were obtained in a sample of white Brazilians. The values are greater than those obtained in 1992, probably due to technical factors.
Authors: Aída L R Turquetto; Luiz F Canêo; Daniela R Agostinho; Patrícia A Oliveira; Maria Isabel C S Lopes; Patrícia F Trevizan; Frederico L A Fernandes; Maria A Binotto; Gabriela Liberato; Glaucia M P Tavares; Rodolfo A Neirotti; Marcelo B Jatene Journal: Pediatr Cardiol Date: 2017-05-12 Impact factor: 1.655
Authors: Rafaella F Xavier; Ana Carolina A C Pereira; Aline C Lopes; Vinícius Cavalheri; Regina M C Pinto; Alberto Cukier; Ercy M C Ramos; Celso R F Carvalho Journal: Lung Date: 2018-11-14 Impact factor: 2.584
Authors: Christiano Perin; Simone C Fagondes; Fernanda C Casarotto; Antônio F F Pinotti; Sérgio S Menna Barreto; Paulo de Tarso R Dalcin Journal: Sleep Breath Date: 2011-09-25 Impact factor: 2.816
Authors: A Travassos; A Rodrigues; K C Furlanetto; L Donária; G W Bisca; A G Nellessen; F Pitta; N A Hernandes Journal: Eur J Clin Nutr Date: 2017-07-19 Impact factor: 4.016