1106 Arteiiusclerosis. 



diately accessible to examination are involved. The walls of 

 the subcutaneous arteriosclerotic vessels give to the touch a 

 peculiar rigid and sometimes uneven firmness, the pulse is slug- 

 gish but at the same time fairly strong because the left ventricle 

 is usually hj^aertrophied. The aortic sound is sometimes 

 accentuated in consequence. 



The changes in the vascular walls may occasionally be rec- 

 ognized in the abdominal aorta and in its pelvic branches. In 

 other cases the presence of the disease can only be assumed 

 when the left ventricle becomes hypertrophic without manifest 

 cause or when sj^uptoms of thrombosis or embolism make their 

 appearance. 



Periarteritis of axis-deer is, according to Liipke, manifested in gradually 

 increasing digestive disturbances which show much similarity with the clinical 

 picture of chronic intestinal catarrh. In spite of fairly good appetite a gradually 

 progressive emaciation becomes noticeable which passes into a sickly condition 

 lasting for weeks and months. 



For the s^miptoms of circumscribed arteriosclerosis the 

 following chapters should be consulted. 



^ . Treatment. The further development of an established 

 inflammation of the arteries cannot be arrested in any way and 

 can not even be retarded. In human medicine iodide. of potas- 

 sium is administered internally in arteriosclerosis. Koranyi 

 succeeded in obtaining a favorable influence upon the process, 

 which had been produced in rabbits by injections of adrenalin, 

 or with subcutaneous injections of iodipin, but Fleischer & Loeb 

 could not confirm his results. 



Literature. Carougeau & Marotel, Eev. gen., 1903. I. 447. — Erb, A. f. 

 exp. Path. u. Phmk., 1905. LIII. 140. — Gulyas, A. L., 1906. 73. — Josue, Presse 

 med., 1904. 281. .— Koranyi, D. m. W., 1906. 679. — Liipke, Verh. d. Deutsehen 

 Path. Gesellsch., 1906. 149.* — Lyding, Z. f. Tm., 1907. XI. 359. — Philisophow, 

 V. A., 1910. CXO. 238. — Scheidemandel, V. A., 1905. CLXXXI. 363. — Saltykow, 

 Beitr. z. path. An., 19,08. XLIII. 147. — Sequens, Vet., 1892. 352. 



2. Dilatation of the Aorta. Aneurysma Aortae. 



Occurrence. The disease occurs relatively most often in 

 horses, much- less often in dog's and cattle; in other animals it 

 is hardly ever -seen. 



Etiology. The walls of the aorta and those of the arteries 

 in general, with very few exceptions, become dilated only when 

 their power of resistance has been reduced, for instance in the 

 presence of chronic endoarteritis, especially when the blood 

 pressure is lastingly raised. This evidently accounts for the 

 fact that aortic aneurysm is observed most frequently in horses 

 because these animals are often employed for hard labor. 



,It might be interesting to ascertain in how far the relation between the 

 frequency, of aneurysm to kind, species and employment . of the. animals i$ mani- 

 fested. According to Tombari the severe exertions which hunters are obliged tt 



