Key result
Standardized FVC and FEV1 values in healthy non-smoking men from Calcutta were lower than those of Western populations but similar to Pakistani adults and north-western Indians.
Why the study?
What are the normal pulmonary function values and prediction formulae for healthy non-smoking men in Calcutta compared to other populations?
Cross-Sectional (n=104)
What are the normal pulmonary function values and prediction formulae for healthy non-smoking men in Calcutta compared to other populations?
Establishes baseline pulmonary function prediction equations for healthy non-smoking men in Calcutta, highlighting regional and ethnic differences in lung capacity.
Local norms may refine spirometry interpretation in South Asian men; leaves open prospective validation of prediction equations.
Pulmonary function measurements were made in 104 healthy non-smoking men from Calcutta with an age range of 20-59 years. Except for peak expiratory flow rate (PEFR), all the measurements were made with the help of two 9L closed-circuit type expirographs using standard spirometric techniques. PEFR was recorded by two Wright peak flow meters. Prediction formulae were derived on the basis of age and height for all the ventilatory tests except for FEV1%, FET and PEFR. These were predicted from age only. The prediction equation for VC, FVC, FEV1, FEV1%, MVVF and PEFR were reliable, but those for forced expitatory flows and time were not. The FVC and FEV1 values of the present subjects, standardized for age and height, were much lower than those of Americans, Caucasians, Europeans and Canadians but similar to those of Pakistani healthy adults. On comparison with the data reported from other parts of our country, it was revealed that the VC and FEV1 values of the current study, after adjustment of age and height, were much higher than those of southern Indians but comparable with those of north-western Indians.
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Chatterjee et al. (1988) conducted a cross-sectional in Healthy (n=104). Pulmonary function testing vs. Western populations, Pakistani adults, and other Indian populations was evaluated on Pulmonary function values (VC, FVC, FEV1, FEV1%, MVVF, PEFR). Standardized FVC and FEV1 values in healthy non-smoking men from Calcutta were lower than those of Western populations but similar to Pakistani adults and north-western Indians.
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