Figure 3
From: Mechanical ventilation and lung infection in the genesis of air-space enlargement
Histological evidence of alveolar overinflation caused by mechanical ventilation and lung infection. The different histological sections (magnification ×4) are representative of aerated lung regions of a control piglet, a non-ventilated-inoculated piglet, a ventilated-non-inoculated piglet, and a ventilated-inoculated piglet. Mean alveolar area is increased in the three study groups. In ventilated-non-inoculated animals, a stretching of alveolar walls is observed. Alveolar distortion is amplified when lung infection and mechanical ventilation are associated.