Figure 3
Regional variation of NO concentration over time. Shown for (a) delivery of a constant 20 ppm concentration during inhalation and (b) delivery of a 100 ms pulse containing 800 ppm NO at 75 ml/s into the inhalation flow, sequenced with the start of each inhalation with zero pulse delay. Note the difference in concentration scales between the two plots. Alveolar concentrations are displayed on a more appropriate scale in Figure 4.