How should the therapist interpret the following pressure-volume loop obtained from a mechanically ventilated infant?

Question

Quizplus · Accepted Answer

The pressure-volume loop demonstrates overdistention. Note the "penguin" or "bird's beak" appearance in the shape of the loops. These loops demonstrate idealized slopes (dashed lines) for change in compliance for the entire breath (C) and change in compliance in the last 20% of inspiratory pressure (C₂₀). The C₂₀/C ratio identifies lung overdistention.

How Should the Therapist Interpret the Following Pressure-Volume Loop Obtained