Abstract
In recent years, to diagnose laryngeal hemiplegia in thoroughbred horses, endoscopic examinations of the upper respiratory tract have been performed while the animal is exercising on a treadmill, as well as during periods of rest. Measurements of tracheal pressure during exercise are useful in assessing tracheal obstruc-tion. The present study showed that tracheal-pressure measurements made during treadmill exercise can assess tracheal obstruction arising from laryngeal hemiplegia and therefore are a useful diagnostic guide.
