Which of the following values are indicative of acute respiratory failure and the need for ventilatory support?
1) Maximum inspiratory pressure (MIP) = -38 cm H₂O
2) Vital capacity (VC) = 650 mL for a 70 kg male
3) Alveolar-to-arterial partial pressure of oxygen [P(A-a) O₂] = 150 on 100% oxygen
4) Maximum expiratory pressure (MEP) = 25 cm H₂O

Question

Quizplus · Accepted Answer

The critical values for the parameters listed are: maximum inspiratory pressure (MIP)-20 to 0,vital capacity (VC)< 10 to 15 mL/kg ideal body weight (IBW),alveolar to arterial partial pressure [P(A-a)O₂] > 450 on O₂,and maximum expiratory pressure (MEP)< 40 cm H₂O.

Which of the Following Values Are Indicative of Acute Respiratory