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
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.
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