INTRODUCTION: A new flow-regulated PEP device has been evaluated regarding functionality and pressure properties.
METHODS: The three different resistance levels were assessed and evaluated at standardized flow rates of 10 and 18 L/min; Kruskal-Wallis test was used to analyse the differences in generated pressure between the different resistance levels.
RESULTS: A range of 3-31 cmH2O was generated with airflows of 10 and 18 L/min. There was a significant difference in pressure among different resistance levels at both flow rates.
CONCLUSION: Overall, there was a significant difference in pressure among different resistance levels at both flow rates, showing that the high resistance significantly increased pressure compared with low resistance. This new device is performing comparable with other resistors available in the market.