Raw Data AMH EVJ.xlsx

Background: Tracheal collapse in horses is reportedly uncommon; however, American Miniature Horses are more commonly affected. To the authors’ knowledge, there is no description of the tracheal luminal diameter of normal sample of American Miniature Horses, making early detection of tracheal luminal narrowing difficult.Objectives: To 1) describe radiographic tracheal luminal diameter in clinically normal American Miniature Horses, 2) report the prevalence of tracheal collapse in a population of subclinical American Miniature Horses, and 3) use tracheal video fluoroscopy to quantify variation in tracheal luminal diameter throughout the respiratory cycle in American Miniature Horses with no history or clinical signs of respiratory disease.