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Ventilatory lung function tests in school children of 6-13 years
Rajkappor1, K K Mahajan, A Mahajan
1Department of Physiology, Pandit B. D. Sharma Postgraduate Institute of Medical Sciences, Rohtak.
The Indian Journal of Chest Diseases & Allied Sciences
|April 1, 1997
Summary
This study derived lung function prediction equations for Indian school children aged 6-13. Spirometry results showed variations between sexes and regions, highlighting the need for localized normal values.
Area of Science:
- Pediatric Pulmonology
- Respiratory Physiology
- Public Health Nutrition
Background:
- Establishing normative data for lung function is crucial for diagnosing respiratory conditions in children.
- Previous studies have indicated regional variations in lung function parameters within India.
Purpose of the Study:
- To derive regression equations for predicting normal ventilatory lung function in healthy Indian school children (6-13 years).
- To compare lung function values with existing North Indian, South Indian, and Western data.
- To investigate the correlation of lung function with age, height, and weight, and analyze sex-based differences.
Main Methods:
- Spirometry was conducted on 186 healthy school children from Rohtak city, India.
- Lung function parameters including FVC, FEV1, PEFR, FEF25%, FEF50%, FEF75%, FEF75-85%, and MVV were measured.
- Statistical analysis was performed to derive regression equations and compare results based on age, height, weight, and sex.
Main Results:
- Lung function values were comparable to North Indian and Western studies but higher than South Indian children.
- Lung function showed a stronger linear correlation with age and height than with weight.
- While some parameters (FVC, FEV1, PEFR, FEF25%, MVV) were higher in boys and others (FEF50%, FEF75%, FEF75-85%) in girls, no consistent sex-specific pattern was observed across all age groups.
Conclusions:
- Regression equations for predicting normal ventilatory lung function in Indian children have been established.
- The findings underscore the importance of considering regional and sex-specific variations when interpreting spirometry results in pediatric populations.
- Age and height are the most significant physical parameters for predicting lung function in this age group.