Figure 6.

CO₂ concentration map representing different stages of the first respiratory cycle (distressed breathing pattern). This figure is the same as Figure 5 except that the respiratory cycle takes half as long because the respiratory rate is modeled at 120/min. The individual figures represent the same divisions within the respiratory cycle as in Figure 5. (a) t = 0.005 sec; (b) t = 0.125 sec; (c) t = 0.25 sec; (d) t = 0.375 sec; (e) t = 0.5 sec.