Hemiplegia laríngea equina

Abstract

Laryngeal hemiplegia, also known as '' snoring '' is a common problem in horses, where there is paresis of the left dorsal cricoarytenoid muscle, leading the animal to inability to abduct the arytenoid cartilage and vocal folds partially obstructing the air passage in the inspiration. In endoscopy, the asymmetry of the glottis can be seen and when subjected to exercise, the vocal cords vibrate, producing the characteristic sound.