[Spirometric tests in school-age children with past bronchopulmonary dysplasia].

The aim of the paper was to estimate 9 spirometric parameters in 38 children aged 8-12, among them in16 with past bronchopulmonary dysplasia and in 22 healthy ones. Mean values of VC, FEV1, FVC Ex, PEF, MEF 75, MEF 50 and MEF 25 in children with past bronchopulmonary dysplasia were significantly lower than in healthy children. In children with past bronchopulmonary dysplasia VC was decreased comparing to normal values in 94% of cases, FVC Ex and MEF 50 in 75% and FEV1 in 63% of subjects. Tiffeneau coefficient and value of FEV1% FVC Ex were normal. Inhaled salbutamol increased significantly the mean values of VC and MEF 25 in children with dysplasia. The increase of FEV1 > 15% in 56% and VC > 15% only in 25% of these children was observed. It was found, that past bronchopulmonary dysplasia induces ventilatory disorders, mainly restriction changes with obstruction component in airways of school-age children.