Comparison of Actual Performance in the Flow and Fraction of Inspired O₂ among Different High-Flow Nasal Cannula Devices: A Bench Study

Figure 3

Changes in flow after clipping in different devices. (a) Flow change rate in five devices. (b) Clipped-flow deviation in five devices. The flow change rate was calculated as the actual-flow minus the clipped-flow and then divided by the actual-flow. Clipped-flow deviation equals clipped-flow minus the corresponding set-flow.

(a)

(b)