220 VETBEINAET STATE BOAED 



Describe otorrhoea of the dog. Give treatment. 



An inflammatory condition of the external auditory meatus. It 

 is characterized by a discharge of a yellowish-brown secretion, 

 usually mixed with pus, pruritus and shaking of the ears. 



Treatment: Cleanse with peroxide of hydrogen, probe and 

 cotton. Dry with ether and keep dry by dusting lycopodium over 

 the affected parts. Repeat the treatment daily. 



Mention two common causes of deafness in the dog. 



Congenital deafness is occasionally met with; in old age, dogs 

 become more or less deaf ; otitis media, inflammation of the middle 

 ear, is generally followed by deafness. 



Give the symptoms and the diagnosis of pus in the guttural pouches. 



Intermittent, unilateral or bilateral, nasal discharge. Appears 

 in considerable quantity at times and then entirely disappears. The 

 discharge is increased when the head is lowered after being checked 

 up, when eating off the floor, swallowing and when pressure is 

 applied over the pouch. Swelling may or may not be marked. 

 Dyspncea is sometimes produced by the pressure on the larynx. 

 Similarly, difiiculty in swallowing may be present. Diagnosis can 

 be confirmed by passing the Eustachian catheter. 



Describe the Viborg or the Chabert method of opening the guttural 

 pouch. 

 Viborg 's method: Secure the patient in lateral decubitus with 

 the head extended. General anaesthesia is advisable. Loc£tte 

 Viborg 's triangle (the space between the posterior border of the 

 inferior maxilla, the terminal tendon of the stemomaxillaris muscle 

 and the external maxillary vein). Shave and disinfect this area. 

 Draw the skin tense and make an incision, 5 cm. long, through the 

 skin and skin muscle immediately beneath and parallel to the tendon 

 aforementioned. Force a passage with the finger or blunt instru- 

 ment through the loose connective tissue to the guttural pouch. 



In Chabert 's method, the incision (6 cm. long) is made about 

 1 cm. in front of the lower half of the wing of the atlas and parallel 

 thereto. The parotid gland is drawn forward and an incision 

 is made parallel to and through the fibres of the stylomaxillaris 

 muscle thus exposed. This leads directly into the guttural pouch. 



Give the causes, symptoms and treatment of postpharyngeal abscess. 



Causes: Injuries to the pharyngeal walls; inflammation of 



same or neighboring tissues; infection following injury by sharp 



objects, balling gun, etc. Infection extending from suppurative 



parotitis to the subparotid lymph-glands. Often seen in strangles. 



