86 THE OPERATION FOR ROARING. 



long scissors at approximately the point indicated by the 

 dotted line in Plate XV. 



If the right side of the larynx appears to be affected also, 

 or if for other reasons it seems desirable, repeat the operation 

 upon the right ventricle. 



(The operation may also be performed without the use of 

 the ventricular burr, but it is more difficult, especially upon 

 the standing animal. The technic is the same until the 

 removal of the ventricular mucosa is reached, when, instead 

 of the burr, the mucosa of the ventricle at its arytenoid 

 border is grasped with the forceps, tension is applied, and 

 the mucosa is incised along the arytenoid border and thence 

 along the summit of the vocal cord. The incision is con- 

 tinued at the point indicated by the dotted line in Plate XV 

 until the ventricular mucosa has been isolated from that of 

 the larynx in general. Cautiously exerting tension with 

 the forceps upon the incised border of the ventricular 

 mucosa, dissect it away from the loose underlying areolar 

 connective tissue either with the Moeller razor-shaped 

 scalpel or with a scalpel handle.) 



However the mucosa is removed the operator should take 

 care that the removal is complete, since any remnant 

 incautiously left behind in the ventricle may prevent the 

 desired adhesion of the arytenoid to the thyroid cartilage or 

 a small patch of mucosa being left deep in the ventricle 

 might permit adhesion of other parts, imprisoning the 

 mucous islet and ending in a mucous cyst. 



When the mucosa has been removed from one or both 

 ventricles, all blood coagula should be wiped away, any 

 shreds of tissue removed and the denuded tissues painted 

 over with tincture of iodine. The application of the tincture 

 of iodine is best made with the long curved dressing forceps 

 carrying a small pledget of cotton saturated with the drug. 

 The operator needs have care in this application lest the 

 horse in forcible expiration blow some of the iodine in his 

 face and eyes. 



