Which of the following indicate severely impaired oxygenation requiring high FIO₂s and positive end-expiratory pressure?
I.PaO₂-PaO₂ greater than 350 mm Hg on 100% O₂
II.VC less than 10 ml/kg
III.PaO₂/FIO₂ less than 200

Question

Quizplus · Accepted Answer

Option I indicates severe hypoxemia with a PaO2/FIO2 ratio less than 350 mm Hg on 100% oxygen, which requires high FIO2 levels to support oxygenation. Option III indicates a low PaO2/FIO2 ratio, which is also indicative of severe hypoxemia. Option II indicates poor lung compliance, which may require positive end-expiratory pressure (PEEP) to maintain adequate oxygenation. Therefore, options I and III indicate severely impaired oxygenation requiring high FIO2s, and option II suggests the possibility of PEEP being required. Answer D would be incorrect because although all three options indicate severely impaired oxygenation, they do not necessarily require all three interventions simultaneously.

Which of the Following Indicate Severely Impaired Oxygenation Requiring High