[Basal pulmonary function studies (FVC, FEV) in a selected child population].

Area of Science:

• Pediatric Pulmonology
• Respiratory Physiology
• Biometrics

Background:

• Assessing ventilatory function in children is crucial for monitoring respiratory health.
• Establishing normative data for lung function is essential for clinical interpretation.
• Previous studies may lack comprehensive data across a wide age range or detailed sex-specific analyses.

Purpose of the Study:

• To evaluate ventilatory function (FVC, FEV1) in a large cohort of children.
• To identify key biometric predictors of lung function in pediatric populations.
• To develop sex-specific prediction equations and percentile tables for ventilatory function.

Main Methods:

• A dry spirometer (Vitalograph) was used to measure ventilatory function.
• 1566 children aged 7-14 years participated, with 1156 selected as the reference population.
• Height was analyzed as a primary biometric parameter correlated with lung function variables.

Main Results:

• Height demonstrated the strongest correlation with forced vital capacity (FVC) and forced expiratory volume in 1 second (FEV1) in both sexes.
• Significant differences in ventilatory function were observed between male and female subjects.
• Multiple and simple linear prediction equations, along with percentile tables, were generated for each sex.

Conclusions:

• Height is a critical determinant of ventilatory function in children.
• Sex-specific reference values are necessary for accurate interpretation of pediatric lung function.
• The developed prediction equations and tables provide valuable tools for clinical and research applications in pediatric respiratory health.