When a Positive Pressure Breath Is Delivered from a Mechanical

When a positive pressure breath is delivered from a mechanical ventilator, how would intra-alveolar and intrapleural pressures be affected during inspiration?

A) The intra-alveolar pressure would rise while the intrapleural pressure remains subatmospheric
B) Both would remain constant at their resting levels
C) Both would decrease
D) Both would increase

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