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Published on: February 9, 2022
The standard range of peak expiratory flow rates of Korean children
Won Hee Seo1, So Hyun Ahn, Su Hwa Park
1Department of Pediatrics, Korea University College of Medicine, Seoul, Korea.
Insights
This study established peak expiratory flow rate (PEFR) reference ranges for Korean children aged 4-18. These new PEFR values, based on height and body surface area, aid asthma management in Korean pediatric patients.
Area of Science:
- Pediatric Pulmonology
- Respiratory Medicine
- Clinical Pediatrics
Background:
- Monitoring peak expiratory flow rate (PEFR) is crucial for effective asthma management.
- Establishing accurate reference ranges is essential for interpreting PEFR measurements in specific populations.
Purpose of the Study:
- To establish normative reference ranges for PEFR in Korean children aged 4-18 years.
- To provide percentile curves for PEFR as a function of height for clinical use in Korea.
Main Methods:
- Utilized the Mini Wright Peak Flow Meter (MWPFM) and spirometry.
- Standardized testing methods recommended by the American Thoracic Society were employed.
- Data collected from a large sample of Korean children.
Main Results:
- PEFR demonstrated a positive correlation with height, age, weight, sitting height, and body surface area (BSA).
- Height and BSA were identified as the strongest predictors of PEFR.
- Established reference values for PEFR in Korean children were higher than previously reported values in Korea.
Conclusions:
- Successfully established reference values for PEFR using the MWPFM in Korean children residing in Seoul.
- The developed percentile curves for PEFR as a function of height will support clinical decision-making for pediatric asthma management in Korea.
Background:
The importance in asthma management of monitoring of peak expiratory flow rate (PEFR) has been emphasized.
Objective:
For effective asthma management in Korean children, we established reference ranges for the PEFR in children 4-18 years of age.
Methods:
The Mini Wright Peak Flow Meter (MWPFM) and spirometry were used in this study. All tests were conducted using a standardized method recommended by the American Thoracic Society.
Results:
From a total sample of 2389 children, 826 (34.5%) were excluded based on our exclusion criteria. For both sexes, the PEFR increased with height, age, weight, sitting height and body surface area (BSA). Height and BSA were found to be better predictors of PEFR than the other parameters. The correlation coefficient between FEV1 and PEFR using the MWPFM was 0.886 (p < .001). The reference values of PEFR for height in our study were higher for both sexes than for those previously reported in Korea (p < .005). When we compared our results with those from other countries, the values for boys of the same height were lower than those for European children, but higher than those for African and Turkish children (p < .001).
Conclusions:
We have established reference values for PEFR obtained by MWPFM in Korean children in Seoul, and have provided the percentile curves for PEFR as a function of height asthma to assist clinical practices in treating children with asthma in Korea.
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