How should the therapist use the point on the pressure-volume loop where the shape changes from concave to exponential?

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The point on the pressure-volume loop where the shape changes from concave to exponential is known as the lower inflection point. It reflects the pressure point at which alveoli begin to open and is located above functional residual capacity (see Figure 29-2 in the textbook). This suggests that many gas exchange units will collapse at normal transpulmonary pressures in acutely injured lungs and may need significant PEEP to maintain patency during expiration.

How Should the Therapist Use the Point on the Pressure-Volume