Fig. 5.
Light photomicrographs of the noninfected lungs from animals with Enterobacter aerogenes pneumonia submitted to either an adverse (A) or a protective (B) mechanical ventilation (MV) in supine position (upper lobe, a; lower lobe, b), or prone position (PP) (upper lobe, c; lower lobe, d). (Original magnification, ×10; hematoxylin-eosin). Neutrophil infiltration was greater in the animals submitted to an adverse MV, especially if kept supine. In addition, SP lead to a significant loss of aeration within the lower lobe while the tidal volume looked evenly distributed in the animals turned into PP, regardless of the MV strategy.