228 VETERINARY STATE BOARD 



Give the prognosis and the treatment of goitre (a) in the dog, (b) in 

 the horse. 



(a) Prognosis is not very hopeful if the growth is extensive. 

 Treatment is unsatisfactory ; paint with tincture of iodine and give 

 potassium iodide, internally. Thyroid extract, internally, is reputed 

 to give good results. The cystic form of goitre can be tapped with a 

 capillary trocar. 



(b) Prognosis favorable ; seldom causes any inconvenience unless 

 very large when dyspnoea may be produced by compression of the 

 throat. Treatment, same as in the dog. 



Give treatment of cystic goitre in the dog. 



Withdraw the contents of the cyst by use of the capillary trocar 

 and paint the overlying skin with tincture of iodine. 



Give the surgical technic of trifacial neurectomy. 



General anesthesia. Shave and disinfect an area, 10 cm. square, 

 over the infraorbital foramen. Make an incision through the skin, 

 subcutem and the levator labii superioris alaque nasii muscle and 

 expose the nerve. Begin the incision 1 cm. above the foramen and 

 carry it downward directly over the nerve a distance of 5 to 6 cm. 

 Pick up the nerve with an aneurism needle and divide it close to the 

 foramen. Remove about 3 cm. from the distal end. Suture the 

 wound, observing aseptic precautions. 



Mention diseases for which phlebotomy of the jugular vein is per- 

 formed. 



Congestion of the brain; diseases which are accompanied by 

 plethora such as azoturia, congestion of the lungs, acute laminitis, 

 etc. ; toxffimie diseases such as tetanus. 



State the various methods of dehorning cattle. 



Dehorning shears ; sawing off with ordinary saw ; application of 

 caustic potash on calves at the point where the horn will erupt will 

 prevent the horn from developing. 



Diseases op the Thorax 



Describe the operation for the relief of hydrothorax. 



Shave and disinfect an area, 2 cm. square, in the seventh inter- 

 costal space on the left side, immediately above the thoracic vein. 

 Draw the skin aside and place the trocar at the anterior border of 

 the rib and, with a sharp thrust, drive it into the thoracic cavity. 

 "Withdraw the stilette and allow the fluid to escape. 



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