Author Question: After placing a patient on a volume-cycled ventilator in the continuous mandatory ventilation ... (Read 32 times)

Starlight · **on:** Jul 16, 2018

After placing a patient on a volume-cycled ventilator in the continuous mandatory ventilation assist-control mode, you note that 55 cm H2O pressure is required to deliver the preset VT of 950 ml.

What high-pressure limit would you now set for this patient?
a. 60 cm H2O
b. 70 cm H2O
c. 80 cm H2O
d. 90 cm H2O

Question 2

In which of the following clinical situations is the incidence of auto-PEEP the greatest? 1. Patients with high respiratory rates 2. Intubated patients with obstructive lung disease 3. Patients with low minute volumes

a. 1 and 2 only
b. 1 and 3 only
c. 2 and 3 only
d. 1, 2, and 3

underwood14 · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: B
If the plateau pressure is less than 30 cm H2O, the high pressure limit can be adjusted to 10 to 20 cm H2O above the peak inspiratory pressure.

Answer to Question 2

ANS: A
PEEP has been advocated in small increments (2 to 3 cm H2O) for overcoming auto-PEEP, par-ticularly in the care of patients with obstructive lung disease.