TABLE 1.

The steady‐state results of the model.

	Settings		Results
COPD stage	CPAP cmH2O	F IO2	P aCO2 mm Hg	P aO2 mm Hg	S aO2	Q L/min	Q B L/min	V E L/min	f breaths/min
Moderate COPD γ = 1.35	0	0.21	46.0	65.8	0.905	6.7	0.96	5.9	11.0
	0	0.25	46.6	90.0	0.97	6.13	0.94	6.26	11.5
	0	0.3	46.7	127.0	0.994	6.0	0.94	5.8	10.7
	5	0.21	45.8	66.3	0.908	6.5	0.95	5.1	9.8
	5	0.25	46.4	91.0	0.97	6.06	0.92	6.0	11.5
	5	0.3	46.5	131.0	0.995	5.97	0.95	6.04	11.2
	8	0.21	45.8	67.4	0.92	6.5	0.95	5.67	10.7
	8	0.25	46.9	92.17	0.97	6.0	0.95	5.98	11.12
	8	0.3	46.8	126.2	0.994	6.0	0.92	6.3	11.66
Advanced COPD γ = 1.6	0	0.21	48.7	59.2	0.85	7.5	1.32	5.54	10.5
	0	0.25	50.3	87.0	0.96	6.9	1.34	5.73	10.8
	0	0.3	50.14	123.1	0.99	6.9	1.33	5.25	10.1
	5	0.21	48.57	62.0	0.87	7.2	1.26	5.22	10.0
	5	0.25	50.16	90.5	0.964	6.9	1.35	5.5	10.5
	5	0.3	50.28	121.8	0.99	6.9	1.33	5.9	11.0
	8	0.21	48.6	60.5	0.86	7.2	1.30	4.9	9.5
	8	0.25	50.2	86.4	0.956	6.9	1.30	5.9	11.0
	8	0.3	50.2	126.2	0.993	6.9	1.30	5.44	10.3