Table 3.

Arterial blood gas data during the MIGET experiments

Subject	$\mathrm{P}{\mathrm{A}}_{{\mathrm{O}}_{\mathrm{2}}}$,Torr	$\mathrm{P}{\mathrm{a}}_{\mathrm{O}}{}_{{}_{\mathrm{2}}}$, Torr	AaDO2, Torr	$\mathrm{P}{\mathrm{a}}_{\mathrm{C}\mathrm{O}}{}_{{}_{\mathrm{2}}}$, Torr	pHa
1	101	82	19	42.6	7.39
2	107	80	27	33.5	7.42
3	109	109	0	36.7	7.43
4	119	104	15	25.5	7.51
5	106	97	9	38.3	7.41
6	113	111	2	33.3	7.44
7	104	96	8	41.9	7.37
Mean	108	97	11	35.9	7.42
± SD	6	12	10	5.9	0.05

$\mathrm{P}{\mathrm{A}}_{{\mathrm{O}}_{\mathrm{2}}}$, calculated ideal alveolar partial pressure of oxygen; $\mathrm{P}{\mathrm{a}}_{\mathrm{O}}{}_{{}_{\mathrm{2}}}$, arterial partial pressure of oxygen; AaDO₂, alveolar-arterial difference for oxygen; $\mathrm{P}{\mathrm{a}}_{\mathrm{C}\mathrm{O}}{}_{{}_{\mathrm{2}}}$,  arterial partial pressure of carbon dioxide; pHa , arterial pH.