What is the primary physiological effect of positive end expiratory pressure (PEEP)? A) Increase the functional residual capacity (FRC). B) Increase the inspiratory reserve volume (IRV). C) Decrease the compliance of the lung (C_L). D) Increase the length of expiration.

Question

Quizplus · Accepted Answer

PEEP elevates a patient's FRC and can help improve oxygenation by preventing collapse of alveolar units that are made unstable by lack of surfactant or disease.

What Is the Primary Physiological Effect of Positive End Expiratory