Experimental acid-aspiration pneumonia in the rabbit. A pathologic and morphometric study.
Four anesthetized rabbits given intratracheal injections of hydrochloric acid, pH 1.5, 2 ml/kg, were killed 4 h later. A fifth rabbit was an untreated control. Each lung had a few red-brown patches of compression atelectasis. Microscopically, treated lungs had a severe exudative necrotizing bronchitis, bronchiolitis, and alveolitis. There was also intra-alveolar hemorrhage and edema. Electron microscopy showed folds, projections and focal swellings of type I cells lining affected alveoli. A morphometric study showed 69% of parenchyma to be normal, 26% edematous and 5% hemorrhagic. In the airways 58% of the epithelium was damaged.
D000818:Animals; D006851:Hydrochloric Acid; D007249:Inflammation; D008168:Lung / Q000473:pathology / Q000648:ultrastructure; D008297:Male; D011015:Pneumonia, Aspiration / Q000139:chemically induced / Q000473:pathology / Q000662:veterinary*; D011817:Rabbits; D014617:Vacuoles / Q000648:ultrastructure
D006851:Hydrochloric Acid