Table 5.

Table of pressures used in mathematical modeling calculations (in mmHg)

Altitude	PB	PASP	Pe	PvN2	${\text{Pv}}_{{\text{O}}_2}$	$P{v}_{C{O}_2}$	PvH2O	Pven	f	λ
Sea Level	750	20	770	573*	40*	46*	47*	706	0.917	2
1,668 m	625	26	651	447	31	37	47*	572	0.879	2
5,260 m	410	32	442	278	27**	34**	47*	386	0.873	2

P_B, barometric pressure; PASP, pulmonary artery systolic pressure; P_e, external pressure surrounding bubbles; PvN₂, mixed venous partial pressure of nitrogen; ${\text{Pv}}_{{\text{O}}_2}$, mixed venous partial pressure of oxygen; $P{v}_{C{O}_2}$, mixed venous partial pressure of carbon dioxide; PvH₂O, mixed venous partial pressure of water vapor; P_Ven, total pressure of dissolved mixed venous gases; f, undersaturation ratio, calculated as the ratio of the sum of mixed venous partial pressures gases to barometric pressure. Above values reflect resting conditions. Surface tension of venous blood: 0.5 atm µm.

^*George et al. (21a).

^**Wagner et al. (73).