Which arterial blood gas results would indicate the development of acute lung injury?
1. pH 7.4, PaCO2 40 mm Hg, PaO2 96, HCO3 24 mEq, SaO2 94%
2. pH 7.31, PaCO2 50 mm Hg, PaO2 70 mm Hg, HCO3 20 mEq, SaO2 90%
3. ph 7.49, PaCO2 32 mm Hg, PaO2 75 mm Hg, HCO3 22 mEq, SaO2 90%
4. pH 7.29, PCO2 28 mm Hg, PaO2 97 mm Hg, HCO3, 16 mEq, SaO2 94%
3
Rationale 1: This would be considered a normal blood gas.
Rationale 2: This would be seen in the proliferative phase of acute lung injury.
Rationale 3: This blood gas would be seen in the patient who has tachypnea and has respiratory alkalosis with hypoxemia.
Rationale 4: This blood gas would not occur in early acute lung injury.
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