OBSTIPATION 



73 



The animal is put under ether after the familiar antiseptic precautions 

 are used, cut down on the abdominal wall and having exposed the 

 necrosed or the stenosed portion, as the case may be, and very carefully 

 inspect the mesenteric blood supply, as great care has to be taken not to 



Fig. 33. — Hairpin method of anastomosis, first stage {French). 



ligate any vessel that would supply any but the portion removed. The 

 vessels are ligated by means of a curved needle being passed around them 

 through the mesentery, the anastomosing loop of the blood vessel being 

 taken up as close to the point of incision as possible. Then an ordinary 



Fig. 34. — Hairpin method of anastomosis, second stage {French). 



lady's hairpin, bent as in the accompanying cut (Fig. 32), is taken and 

 one prong is passed transversely across the intestine and the free ends of 

 the pin are seized by a pair of hemostatic forceps or tied with sutures and 

 another pin is inserted in a similar manner at the other point of resection; 



