Gutteral Pouch Injury

It is seen most often in young foals and is more common in females than in males.

Gutteral pouch injury.

Guttural pouch mycosis is a fungal infection of one or both guttural pouches. Guttural pouch tympany is an uncommon ailment in which excessive amounts of air become trapped in the pouch resulting in abnormal expansion. The guttural pouch spans from the inside surface of the eardrum down to the pharynx the opening behind the mouth where the oral cavity and nasal passages meet. The pouches are of veterinary importance in domestic horses equus caballus because fungal infections can result in erosion of the carotid artery and precipitate fatal haemorrhages newton et al.

Guttural pouches are unique to few species of animals including the horse. It is caused by a fungus that infects the lining of the guttural pouch usually on the roof of the guttural pouch. Rearing over backwards and trauma to the base of the skull are often associated with rupture of these two muscles. The infection usually develops subsequent to a bacterial primarily streptococcus spp infection of the upper respiratory tract.

Redwings vet nic de brauwere talks us through the process as he scopes a horse s guttural pouch and takes sampl. The most common causes of infection come from bacteria and fungi present within the pouch. Guttural pouch empyema is defined as the accumulation of purulent septic exudate in the guttural pouch. These structures are large air filled sacs positioned on either side of the neck below the ear of the horse.

Clinical signs include intermittent purulent nasal discharge painful swelling in the parotid area and in severe cases stiff head carriage and stertorous breathing. Guttural pouch mycosis is a fungal infection that affects horses. The pouch wall is traversed by the internal carotid artery. They are lined with a thin membrane which separates them from nerves and and arteries.

The ventral straight muscles of the head or avulsion fracture of the basisphenoid bone where these muscles attach to it. Guttural pouch hemorrhage can also be associated with rupture of the rectus capitis ventralis and longus capitus muscles i e. What causes guttural pouch infection. The physiological function if any of guttural pouches is unknown but recently it has been proposed that they might function during selective brain cooling sbc to maintain blood carried by the internal.

Fungal plaques form within the guttural pouches most commonly along the walls of the major blood vessels internal carotid external carotid and maxillary arteries figure 3. Guttural pouch mycosis is a rare but very serious disease in horses. Tympany is usually unilateral but in some cases can affect both pouches.