Flow Rounding



Flow Rounding®


Over a decade ago, DeVilbiss was focused on CPAP patient comfort. It is widely accepted that those patients that require high CPAP pressure will be best served by a bilevel device. A Bilevel device provides two prescribed pressures – Inspiratory Positive Airway Pressure (IPAP) and Expiratory Positive Airway Pressure.


By providing two prescribed pressures, a patient would not need to breath against the required high pressure. However, it became evident that the transition from IPAP to EPAP or vice versa would cause arousals in patients. The cause seemed to stem from the abrupt changes – so DeVilbiss engineers set out to address this issue. The result was Flow Rounding, which allows for the literal rounding of the delivered pressure waveform.


Flow Rounding


Flow Rounding is a feature that changes the slope of the pressure waveform during the transition from prescription pressure to the EPAP and vice versa. This enables a smooth transition. There are 6 levels of flow rounding with level 0 having the steepest slope and quickest transition, and level 5 having the gentlest slope and slowest transition.


*DeVilbiss Flow Rounding is protected under patent U.S. Patent 5,865,173; Application
No. 554595 filed on 11/06/1995.


» Continue to US website

DeVilbiss Healthcare

Thank you for visiting DeVilbiss Healthcare. Please note that all information contained on this website including, but not limited to, warranties, product specifications and model availability is specific to products offered to North American customers only. To learn more about DeVilbiss products that are sold internationally, please visit one of these websites:

DeVilbiss Healthcare does not sell directly to consumers. Please go to http://www.devilbisshealthcare.com/find-a-provider to locate a DeVilbiss provider near you.