172 Surgical Diseases and Surgery of the Dog 



contracting compressed the gut ana produced flexures. I have 

 found another case of obstruction recorded by Parkes, which re- 

 sulted through a fold of intestine becoming adherent to a stump 

 of ligated mesentery left free in the cavity. Acute flexure was 

 produced at the point against which the contents of the bowel 

 accumulated in large quantity. Jaflfe referred to an instance of 

 partial obstruction through the small intestine becoming adherent 

 to the omentum after an experimental intestinal operation. 



Compression resulting from passage of a loop of bowel through 

 a slit in the mesentery I have not found recorded as having occurred 

 clinically, with the exception of an instance mentioned under Tor- 

 sion, but the possibility of its taking place is fully demonstrated 

 by the results attending a series of experiments conducted by Baragz 

 in which knuckles^ of bowel were isolated but left in situ, the 

 margins of the cut extremities being inverted and sutured, and 

 the remaining upper and lower portions of the tract anastomosed. 

 It was found very difficult to so dispose of the mesentery that 

 rents did not remain, and in seventeen dogs five died as a result 

 of such rents by portions of bowel slipping through and becoming 

 twisted. 



Hemorrhoidal nodules, suppuration of enlarged anal glands, 

 enlarged prostate, abdominal abscesses, neoplasms of the viscera 

 and retroperitoneal glands (Siedamgrotzky), and ascites, ' may 

 each and all bring about compression-coprostasis. These conditions 

 will be discussed under their respective headings elsewhere. 



Symptoms and Diagnosis. The symptoms of obstruction by 

 direct compression resemble those of constriction-compression or 

 simple coprostasis, in greater or less degree. Explorative laparo- 

 tomy will alone enable the practitioner to arrive at a correct diag- 

 nosis of adhesion-obstruction, but before taking this step, all other 

 conditions named must be taken into consideration as being possible 

 factors in the production of the trouble. 



Treatment. Intervisceral adhesions must be broken down by 

 gently tearing them apart, or with the aid of a suitable instrument. 



(b) Obstruction by Suspension of Peristalsis Through Arrest 

 of the Mesenteric Circulation. Familiar examples of this form of 

 obstruction are Incarcerated and Strangulated Hernias, Torsion, 

 and Intussusception. 



Incarcerated and Strangulated Hernia. A hernia is said to 



