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

Question

Quizplus · Accepted Answer

During a positive pressure breath from a mechanical ventilator, both intra-alveolar and intrapleural pressures increase. This is because the ventilator pushes air into the lungs, increasing the pressure inside the alveoli (intra-alveolar pressure) and the pressure in the pleural space (intrapleural pressure) as the lungs expand against the chest wall.

When a Positive Pressure Breath Is Delivered from a Mechanical