Measurement of peak flow in children: a comparison between the low-range mini Wright and the low-range Ferraris...

Area of Science:

• Pediatric Pulmonology
• Medical Device Evaluation

Background:

• Accurate measurement of peak expiratory flow rate (PEFR) is crucial for managing pediatric respiratory conditions.
• Established devices like the mini Wright peak flow meter are widely used, but newer, portable options require validation.

Purpose of the Study:

• To compare the accuracy and reliability of the new low-range Ferraris pocket peak flow meter against the established low-range mini Wright peak flow meter.
• To assess the usability and reproducibility of the Ferraris pocket peak flow meter in a pediatric population.

Main Methods:

• A comparative study involving 50 children.
• Each child performed three forced expirations using both the Ferraris pocket and mini Wright peak flow meters.
• Peak expiratory flow rates (PEFR) were recorded and analyzed for correlation and mean differences.

Main Results:

• The Ferraris pocket peak flow meter yielded higher readings compared to the mini Wright meter, with a mean difference of 15 L/min.
• Peak expiratory flow rate measurements from both devices demonstrated a high degree of correlation (r = 0.882, P < 0.001).
• The Ferraris pocket peak flow meter was found to be easy and comfortable for children to use.

Conclusions:

• The Ferraris pocket peak flow meter is a reliable and reproducible tool for measuring peak expiratory flow rates in children.
• The device's ease of use and comfort make it a suitable alternative for pediatric PEFR monitoring.
• The observed higher readings warrant consideration in clinical practice when interpreting results from this new device.