THB 



PRINCIPLES AND PRACTICE 



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VETEEINARY SURGERY. 



CHAPTER L 



INFLAMMATION. 



©EFINITION — PATnOLOQT — PHENOMENA — CAUSES — TARrETIES DXTB TO 

 OAUSAnON LOCAL SYMPTOMS CHRONIC INFLAMMATIOK TER- 

 MINATIONS — RESOLUTION — EFFUSION. 



The process of inflammation is the moat important of all morbid 

 actions and conditions. 



It has been variously defined bj different in^ estigators, ao- 

 <jording to what they conceived it to be. Thus Hunter says 

 it is simply an increased action of the vessels. In ^ir. Syme's 

 opinion, it is "a perverted action of the capillary system, generally 

 attended by heat, redness, pain, and swelling." Dr. .Alison de- 

 scribes it as " a peculiar perversion of nutrition or of secretion;" 

 and Dr. Aitken defines it as " a complex morbid process charac- 

 terised (1.) by a suspension of the concurrent exercise of function 

 among the mmute elements of the tissue involved ; (2.) by 

 stagnation of the blood, and abnormal adhesiveness of the blood 

 discs in the cnpillary vessels contiguous to the tissue elements 

 whc3e functions are suspended ; (3.) by contraction of the 

 minute arteries leading to the capillaries of the affected part, 

 with subsequent dilatations and paralysis of the contractile 

 tissue of the affected blood-vessels." Dr. Burden Sanderson 

 defines it to be "a succession of changes which occur in a 



B 



