In which of the following situations is pressure-controlled ventilation sometimes used?
1) When a precise PaCO₂ has to be maintained (some closed-head injuries)
2) When more even distribution of ventilation is required
3) When ventilating patients with severe, refractory hypoxemia
4) When tidal volume in unstable due to leaks

Question

Quizplus · Accepted Answer

Pressure-controlled ventilation is sometimes used when ventilating patients with severe, refractory hypoxemia (option 3) and when tidal volume is unstable due to leaks (option 4). It is not typically used for maintaining a precise PaCO2 (option 1) or for achieving more even distribution of ventilation (option 2). Therefore, the best choice is B (3 and 4 only).

In Which of the Following Situations Is Pressure-Controlled Ventilation Sometimes