Article Figures & Data
Figures
- Fig. 1.
Template for selecting nasal prong size.
- Fig. 2.
Model nares, made from a 22-mm inner-diameter adapter, with nasal cannula in place, attached to the lung simulator. The cap on the distal end of the adapter prevents leak, which simulates a closed-mouth scenario. LG = large (ie, the large nasal prongs indicated in Fig. 1).
- Fig. 3.
Changes in tidal volume at 6 flows (0–6 L/min) and 4 simulated muscle pressure (Pmus) settings.
- Fig. 4.
Changes in peak pressure, mean pressure, and PEEP at 6 flows (0–6 L/min) and 2 simulated muscle pressure (Pmus) settings.
- Fig. 5.
Pressure drop (Pmin) at 6 flows (0–6 L/min) and 4 simulated muscle pressure (Pmus) settings during the initiation of an inspiratory effort.
- Fig. 6.
Representative flow and pressure waveforms, with a simulated muscle pressure of 13 cm H2O, show the effect of nasal cannula on airway pressure (red waveforms) and flow (black waveforms, scale × 0.1).
