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PubMed1991

[Use of some biochemical and physico-chemical indices for the evaluation of lung function in healthy school-age children].

The biochemical and physicochemical characteristics of nonrespiratory pulmonary functions were determined in 255 children of school age according to the condensate of exhaled air. As compared to the younger children, those belonging to the senior age groups manifested an increase of specific respiratory moisture loss. As compared to winter, specific respiratory moisture loss in summer was found to be decreased; the condensate of exhaled air was discovered to have a higher content of total protein, elevated concentration of surface active substances in the lung surfactant, and to show a certain tendency towards reduction of the intensity of the processes of free radical oxidation. No sex-associated differences were established between the characteristics under study.

Adolescent↗
PubMed1991

Pulmonary function studies in healthy school boys of West Bengal.

The establishment of normal standards of dynamic pulmonary function measurements in the form of prediction equations will serve as a remedial measure of different aspects of obstructive pulmonary diseases, especially in children. With a view to achieving the target, dynamic pulmonary function measurements were undertaken on 328 healthy school-going children of West Bengal having age ranging between 9 and 18 years. All the spirometric measurements except PEFR were taken with the help of a 9 l closed-circuit type expirograph following the methods and techniques of American Thoracic Society. PEFR was measured by Wright Peak Flow Meter. Prediction equations were derived on the basis of age and height for all the pulmonary function measurements except FEV1% and FET. The prediction equations for FVC, FEV1, MVVF, and PEFR were reliable, but relative variability of predicted FEF25-75% and FEF75-85% was very large. A comparative study of FVC, FEV1, and PEFR values of our subjects, standardized for age and height, was much closer to the boys of Delhi in FVC but higher than South Indian boys in FEV1, North and South Indian boys in PEFR. In an attempt to compare FVC and FEV1 values of our subjects with foreign populations, it is revealed that boys of our study were much lower than American (White), European, and Jordanian boys but comparable with those of Chinese and Libyan boys.

Adolescent↗