The effects of dehydration on the radiologic and pathologic appearance of experimental canine segmental pneumonia.

The American Review of Respiratory Disease
A CaldwellM E Morton

Abstract

In an attempt to determine whether dehydration (intravascular fluid depletion) alters the radiologic or histologic picture of segmental Streptococcus pneumoniae pneumonia, we induced pneumonia in 2 groups of dogs, group 1 (normally hydrated) and group 2 (dehydrated). Five hours after the intrabronchial instillation of a brain-heart-Streptococcus pneumoniae mixture, all chest radiographs of dogs in group 1 and 2 were compatible with segmental alveolar pneumonia. Histologic lung sections obtained as early as 2.5 hours after infusion of the brain-heart-Streptococcus pneumoniae mixture revealed intra-alveolar edema with a minimum of leukocytes. By 24 hours after infusion, both groups showed marked intra-alveolar collections of edema fluid, fibrin, and leukocytes. We conclude that in a canine model, moderate dehydration has no effect on the radiologic or histologic features of Streptococcus pneumoniae pneumonia.

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