Author Question: Which of the following are associated with auto-PEEP? 1. Erroneous calculation of static lung ... (Read 61 times)

leilurhhh · **on:** Jul 16, 2018

Which of the following are associated with auto-PEEP? 1. Erroneous calculation of static lung compliance 2. Hemodynamic compromise 3. Barotraumas 4. Increasing mean airway pressure

a. 1 and 3 only
b. 1 and 2 only
c. 2, 3, and 4 only
d. 1, 2, 3, and 4

Question 2

Which of the following factors is/are associated with an increased risk for auto-PEEP?

1. Mechanical ventilation of a patient with obstructive lung disease
2. High-minute volume during mechanical ventilation
3. Acute respiratory distress syndrome (ARDS) patients
4. Pulmonary fibrosis
a. 1 and 4 only
b. 1, 2, and 3 only
c. 3 only
d. 1, 2, 3, and 4

JYan · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: D
The presence of auto-PEEP results in the underestimation of mean alveolar pressure when mean airway pressure is being monitored to reflect mean alveolar pressure. An increase in mean alveolar pressure due to auto-PEEP may exacerbate the hemodynamic effects of positive pressure ventila-tion and increase the likelihood of barotrauma in a manner similar to that seen with the applica-tion of PEEP.

Answer to Question 2

ANS: B
Patients receiving mechanical ventilation for obstructive airways disease have a large degree of inhomogeneity in the emptying of lung units, and auto-PEEP can develop even at relatively low-minute ventilation. Auto-PEEP is common in mechanically ventilated patients with high-minute ventilation and thus occurs in some patients with ARDS.