Which of the following criteria are used to define ventilatory and hypoxemic dysfunction in patients who may need intubation?
I.PaO₂ < 80 mm Hg with FiO₂ > 0.60
II.PaCO₂ > 50-60 mm Hg
III.pH < 7.3
IV.PaO₂/FiO₂ > 250

Question

Quizplus · Accepted Answer

The need for intubation,due to a lack of pulmonary function,results from deficits in oxygenation,ventilation,or both taken in concert with the patient's clinical condition.Acute ventilatory dysfunction can be defined as an arterial partial pressure of carbon dioxide (PaCO₂)greater than 50 to 60 mm Hg with a pH less than 7.3.Pulmonary dysfunction due to hypoxemia is defined as an arterial partial pressure of oxygen (PaO₂)less than 60 mm Hg with a fraction of inspired oxygen (FiO₂)greater than or equal to 0.60.These definitions assume that there is no intracardiac right-to-left shunt resulting from a congenital cardiac defect.

Which of the Following Criteria Are Used to Define Ventilatory