Table 3 Cross-sectional areas and pressure drops for 7subjects with tracheal stenosis before and after tracheal stent implantations

From: Numerical analysis of airflow alteration in central airways following tracheobronchial stent placement

Subject		Cross-sectional area (cm ²)						Pressure drop (Pa)
		Inlet	Right primary bronchus	Left primary bronchus	Outlet 1	Outlet 2	Outlet 3	Inlet*	Right primary bronchus	Left primary bronchus
1	Before	0.90	1.98	2.54	0.42	0.45	1.31	26.66	0.61	0.52
	After	0.53	1.22	0.81	0.53	0.46	1.35	3.96	0.39	0.32
2	Before	1.58	1.61	1.28	1.08	1.64	1.31	4.85	−0.04	−0.01
	After	2.24	1.79	1.48	0.99	1.79	1.71	0.59	0.07	0.07
3	Before	1.69	1.37	0.97	0.33	0.78	0.76	6.46	0.26	0.59
	After	2.66	1.71	1.62	0.42	1.49	1.33	1.44	0.40	0.39
4	Before	1.98	1.01	0.93	0.21	0.44	1.79	4.73	0.11	0.59
	After	1.96	1.00	1.17	0.66	2.04	2.35	0.84	0.14	0.24
5	Before	0.73	1.97	0.90	1.03	0.70	1.45	8.92	0.23	0.02
	After	1.02	1.75	1.12	0.97	1.47	1.38	0.68	0.39	0.45
6	Before	1.25	1.42	1.76	0.86	0.81	1.33	2.25	0.27	0.33
	After	0.39	1.73	1.54	0.95	0.46	1.52	1.65	0.18	0.23
7	Before	2.07	1.40	1.44	0.37	0.62	0.98	20.36	−0.20	0.41
	After	1.53	1.16	1.43	0.43	1.40	1.12	3.15	0.27	0.20
Average	Before	1.45	1.53	1.40	0.61	0.77	1.27	10.60	0.17	0.35
	After	1.47	1.48	1.31	0.70	1.30	1.53	1.75	0.26	0.27

*: The airflow rate of the inlet was set to 100 ml s^-1.

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