Which of the following indicate that an adult patient is ready to be weaned from ventilatory support?
1) PAO₂ - PaO₂ = 430 on 100% O₂
2) V_D/V_T = 0.55
3) MIP = -33 cm H₂O
4) PO₂ = 76 mm Hg on 40% O₂

Question

Quizplus · Accepted Answer

2) A ventilatory support weaning indicator is a low ventilatory support/tidal volume ratio (VS/VT), suggesting less effort needed to maintain adequate ventilation. 3) A maximal inspiratory pressure (MIP) more negative than -20 cm H2O indicates good respiratory muscle strength, important for weaning. 4) A partial pressure of oxygen (PaO2) greater than 60 mm Hg on less than or equal to 40% oxygen suggests adequate oxygenation, another weaning criterion.

Which of the Following Indicate That an Adult Patient Is