ASCITES 261 



is to be made. A small exploring trocar is used, which 

 should be sterilized, and inserted through the abdominal 

 walls. When the stylet is withdrawn, the fluid will usually 

 flow out in a stream. Sometimes the end of the cannula 

 becomes blocked by omentum or bowel. This can be over- 

 come by moving the cannula slightly or by re-inserting the 

 stylet. The fluid should be collected in a vessel to note its 

 character. The amount of fluid to remove depends largely 

 upon the condition of the animal. Should, however, symp- 

 toms of dyspnea, cyanosis, and rapid, weak pulse appear, 

 the cannula should be at once removed. The operation 

 may be repeated next day. The punctured wound resulting 

 from the operation should be protected by covering with 

 collodion and a small pledget of cotton. Death occurs 

 occasionally from collapse following the operation. There- 

 fore the patient should be carefully watched and the removal 

 of the fluid stopped, and general stimulants given, when 

 signs of collapse appear. 



