ARTERITIS AND THROMBOSIS. 359 
zand posterior radial arteries). In the observation of George,. after ten, 
minutes of exercise the horse was lame on both forelegs; “they were 
‘semi-flexed, scraping the ground, and seemed dumb or paralyzed. At 
that time, the respiration was very labored, the beatings of the heart bounc- 
‘ing; the animal was anxious, the face contracted, the skin of the whole 
“body covered with perspiration, except the two forelegs, whose hairs 
were dry and the skin cool.” After fifteen minutes of rest these symp- 
‘toms disappeared. At the post-mortem, one found a thrombosis of both 
‘ “brachial trunks ; “the muscular structure was not discolored and presented 
‘nothing abnormal; it was the same with the nerves.” In a seven year 
= -old mare, Moller has observed a similar case to that cf George. Examina- 
tion of the chest revealed hypertrophy of the heart; but at rest nothing 
-abnormal could be detected in the forelegs. Trotting exercise, after ten 
‘minutes, brought out a general stiffness of the anterior quarters; the legs, 
‘the left especially, moved with difficulty, held in abduction, scraping the 
ground, the feet stumbling over the smallest obstacles in their way; the 
-animal fell down repeatedly, and when up, would carry her shaking 
legs in abduction. The symptoms disappeared after five or ten minutes 
-of rest, to return again after a short exercise.’ 
Therapeutics is powerless against arterial thrombosis. Alcalines are of no 
‘use. According to Goubaux, the daily administration of 20 grammes of 
‘iodide of potassium has given to Pilton two recoveries in cases of intermit- 
‘tent lameness due to obliteration of the crural artery. New facts are 
necessary to confirm the efficacy of this treatment. We have tried it on 
‘three occasions without results. 
Massage of the aorta per rectum, recommended by Collin and Bayer, is 
“useless and dangerous; useless, as the clot is not disturbed ; dangerous, on 
account of the embolies its broken pieces might promote. Moller told 
-us that he tried massage in a horse, and that death occurred in twenty- 
four hours. At post-mortem, with the old lesions a recent clot was found 
-which obliterated the posterior aorta. 
In rare cases, recovery has occurred under the influence of exercise. 
1 Numerous cases of thrombosis and obliterations of the terminal branches of the 
“posterior aorta have been recorded in America by A. Liautard, Peabody, Ambler, 
‘Huelsen and others. The symptoms were those described by the author. The 
‘lesions varied. In one case of Liautard the obliteration involved the posterior aorta, 
-circumflex iliac, external and internal iliac on both sides—on the left side the clot 
was traced in the tibial arteries to the hock. In another the internal iliac only with 
its ramification was involved. In Peabody’s case both iliacs were blocked; on the 
external the clot extended to the femoral, popliteal and tibial arteries. In the case 
of Ambler it was found that the posterior aorta near its quadrification was partly 
«closed by a large clot extending to the left iliac down to the femoro popliteal. On the 
right side a clot existed also, but smaller.—American Vet. Review, vols. 4, 5 and 11. 
