Effects of pulmonary acid aspiration on the lungs and extra-pulmonary organs: a randomized study in pigs

Table 2 Pulmonary gas exchange

FiO₂ 100%	T₀	T₆₀	T₁₂₀	T₂₄₀
*pHa*
Control	7.42 ± 0.1	7.36 ± 0.1	7.38 ± 0.1	7.40 ± 0.1
AAP	7.36 ± 0.1	7.24 ± 0.1*	7.27 ± 0.1	7.33 ± 0.1
*PaCO* ₂ *, mmHg*
Control	41.8 ± 5.0	44.0 ± 8.0	41.8 ± 5.4	34.9 ± 5.4
AAP	43.1 ± 3.0	58.4 ± 12.1*	55.8 ± 10°	51.4 ± 8.5°
*PaO* ₂ *, mmHg*
Control	486 ± 55	455 ± 78	468 ± 96	470 ± 74
AAP	447 ± 65	261 ± 97*°	332 ± 119*	354 ± 87*^#°

Values are mean (SD) of seven. AAP, acid aspiration pneumonitis; Control, control animals; FiO₂, inspired oxygen fraction; PaCO₂, arterial CO₂ tension; PaO₂, arterial oxygen tension; paO₂/FiO₂, partial pressure arterial oxygen/fraction inspired oxygen ratio. * P < 0.05 vs. T₀; ^#° P < 0.05 vs. T₆₀, ° P < 0.05 Control vs. AAP.

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