An Official American Thoracic Society Workshop Report: Features and Measurements of Experimental Acute Lung Injury in Animals

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Abstract
Acute lung injury (ALI) is well defined in humans, but there is no agreement as to the main features of acute lung injury in animal models. A Committee was organized to determine the main features that characterize ALI in animal models and to identify the most relevant methods to assess these features. We used a Delphi approach in which a series of questionnaires were distributed to a panel of experts in experimental lung injury. The Committee concluded that the main features of experimental ALI include histological evidence of tissue injury, alteration of the alveolar capillary barrier, presence of an inflammatory response, and evidence of physiological dysfunction; they recommended that, to determine if ALI has occurred, at least three of these four main features of ALI should be present. The Committee also identified key “very relevant” and “somewhat relevant” measurements for each of the main features of ALI and recommended the use of least one “very relevant” measurement and preferably one or two add...

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