PRELIMINARY OPERATIONS 



89 



Fig. 88. Insertion of the tracheal cannula. 



7?t Carotid arkry 



Separate 

 blunt pointed 



probe. Do/rr use ftnwe 



Fig. 89. lifting up the right carotid sheath on an aneurism needle. A blunt probe is 

 then used to separate the vago-sympathetic trunk from the artery. 



