# Pressure Properties of a New Positive Expiratory Pressure Device—OpenUp Flow a Three‐in‐One Solution

## TL;DR

This paper evaluates a new PEP device's pressure properties and shows it performs similarly to existing devices in the market.

## Contribution

The study introduces and evaluates a new flow-regulated PEP device with three resistance levels.

## Key findings

- The device generated a pressure range of 3–31 cmH2O at flow rates of 10 and 18 L/min.
- High resistance significantly increased pressure compared to low resistance at both flow rates.
- The device performs comparably to other PEP devices available in the market.

## Abstract

A new flow‐regulated PEP device has been evaluated regarding functionality and pressure properties.

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.

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.

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.

A new flow‐regulated PEP‐device has been evaluated regarding functionality and pressure properties at standardized flow rates of 10 and 18 L/min. There was a significant difference in pressure at high resistance significantly increased pressure compared with low resistance levels at both flow rates. This new device is performing comparable to other resistors available in the market.