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Impulse oscillometry reference values and correlation with predictors in Turkish preschool children
İlkay Er1, Ayla Günlemez1, Canan Baydemir2
1Divisions of Neonatology, Kocaeli University Faculty of Medicine, Kocaeli, Turkey.
Insights
This study establishes crucial reference values for impulse oscillometry (IOS) in Turkish preschool children. Findings reveal significant correlations between lung function parameters and anthropometric predictors like height and age.
Area of Science:
- Pediatric Pulmonology
- Respiratory Physiology
- Biostatistics
Background:
- Impulse oscillometry (IOS) is a noninvasive lung function test.
- No established IOS reference values exist for Turkish children.
- Accurate reference values are vital for diagnosing pediatric respiratory conditions.
Purpose of the Study:
- Determine IOS reference values for healthy Turkish preschool children.
- Investigate correlations between IOS parameters and anthropometric predictors (height, weight, BMI, age).
- Provide a normative dataset for clinical application in Turkey.
Main Methods:
- Recruited 151 healthy Turkish preschool children (3-7 years).
- Performed IOS to measure airway resistance and reactance (R5-R20, X5-X20), impedance (Z5), resistance area (AX), and resonance frequency (Fres).
- Utilized regression analysis and stepwise methods to assess correlations with anthropometric data.
Main Results:
- Established reference values for IOS parameters in Turkish preschool children.
- Found significant correlations: resistance with height, reactance with age.
- Identified sex-specific correlations between anthropometrics and IOS parameters.
Conclusions:
- This study provides the first reference values for IOS in Turkish preschool children.
- Height and age are significant predictors of IOS parameters in this population.
- These reference values will aid in diagnosing and monitoring respiratory diseases in young children.
Abstract:
Er İ, Günlemez A, Baydemir C, Kılıçbay F, Ersu R, Uyan ZS. Impulse oscillometry reference values and correlation with predictors in Turkish preschool children. Turk J Pediatr 2019; 61: 560-567. Impulse oscillometry (IOS) is a noninvasive, rapid technique requiring passive cooperation that allows for evaluation of lung function through the measurement of airway resistance and reactance. There are no available reference values for Turkish children. This study is aimed to determine the reference values of IOS parameters and to study their correlation with height, weight, body mass index, and age as predictors in healthy Turkish preschool children. Healthy children between 3-7 years of age who were selected according to ERS/ATS criteria and followed at Kocaeli University outpatient clinic performed IOS. The correlation between the anthropometric predictor variables and resistance and reactance at 5-20 hertz (R5-R20 and X5-X20), the respiratory impedance at 5 hertz (Z5), resistance area (AX) and resonance frequency (Fres) were assessed by regression analysis and stepwise method. 151 children (93 female) with the mean age of 67.9±16.2 months participated in the study. Multilinear regression analysis for IOS values of all children revealed that resistance was significantly correlated with height and reactance was significantly correlated with age (p < 0.05). For girls, height had a negative effect on R5-20, Z5, AX values, while age had a positive effect on X5-20 and a negative effect on Fres (p < 0.05). For boys, weight had a negative effect on R5- 20, Z5 values, while age had a positive effect on X15-20 and a negative effect on AX, Fres (p < 0,05). This study provided reference values of IOS in healthy Turkish children that would be a useful guide for diagnosing and following respiratory diseases in preschool children.
