78 PUNCTURE OF THE CHEST. 



III. OPERATIONS ON THE TRUNK AND GENITAL 

 ORGANS. 



19. PUNCTURE OF THE CHEST. 

 FIG. 4. 



Objects. The relief of hydrothorax or pyothorax. 



Instruments. Razor, scissors, trocar, i m. of rubber 

 tubing of the same size as the trocar, vessel for receiving 

 the escaping fluid, dressing material. 



Technic. Operate upon the standing animal, the point 

 of operation being the seventh intercostal space on the left 

 side, and the sixth on the right. Dogs may be laid upon 



FIG. 4. 

 Puncture of the chest ; puncture of the intestine. 



the table. The ribs are enumerated from behind forward, 

 counting eighteen for the horse and fourteen for the dog. 

 Clip or shave the designated intercostal area immediately 

 above the thoracic vein. Grasp the trocar firmly with the 



