Thrombosis and Embolism. 355 



the same way when left at rest. The circulation in the muscles 

 is enough for a moderate nutrition but altogether inadequate to 

 sustain active work. 



Chronic Embolism of the Internal Iliac Artery. Inthisca,se 

 the control of the muscles of the limb may be perfect but there is 

 some indication of paresis of tail, bladder, rectum and anus. Im- 

 paction of the rectum is liable to occur. By examination through 

 the rectum the pulsations are felt to be strong in the aorta and ex- 

 ternal iliac, but imperceptible in the internal iliac blocked by the 

 embolus. 



Chronic Embolism of the Axillary Artery. Here there are 

 the same general symptoms, the absence of the radial and digital 

 pulsations, the wasting of the muscles of the forearm, and the 

 intermittent lameness, developed rapidly by exercise and recover- 

 ing promptly under rest. 



Acute Embolism of the Mesenteric Arteries. This will be 

 fully treated under the title of verminous colic in solipedes. The 

 blocking of the branches, usually of the anterior mesenteric 

 artery, leads to derangement of the innervation, congestions, 

 spasms, involutions and other disorders. The presence of the 

 strongyli in the fgeces, the general symptoms of intestinal worms, 

 and the recurrence of the indigestions and spasms would .serve to 

 indicate the nature of the complaint. 



Treah7ient of Chronic Embolism . As affecting the arteries of the 

 limbs the repair must be largely left to nature, and we must place 

 the patient in condition, favorable to such repair. Except in the 

 early stages absolute rest is not necessary. Gentle exercise stim- 

 ulating to a freer circulatoin solicits a slow enlargement o£ the 

 anastomosing vessels (arterial or capillar)^), and when this has 

 reached a given stage, weak pulsations may again be felt in the 

 vessels beyond and the muscles will once more stand moderate, 

 work without lameness. Alkalies and iodide of potassium may 

 be given to solicit solution of the clot, but this can rarely be 

 counted on to the extent of rendering the vessel once more per- 

 vious. A small paddock in which the patient can move around 

 quietly is desirable, and in a few months a tolerable recovery may 

 have taken place. 



Embolism in other organs must be treated on the same general 

 expectant method, and a considerable time is usually necessary to 

 secure a fair recovery. 



