A diagnosis of respiratory failure can be made if which of t…
A diagnosis of respiratory failure can be made if which of the following are present? I. PaO2 55 mm Hg, FIO2 0.60 II. PaCO2 57 mm Hg, FIO2 0.21 III. P(A−a)O2 45 mm Hg, FIO2 1.0 IV. PaO2/FIO2 400
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