Treatment. Purulent Nephritis. 1007 



Literature. Albreeht, W. f. Tk., 1901. 25. — Ball, J. vet., 1906. 193. — 

 Degen Die hamatogene eiter. Nephritis d. Schweines. Diss Giessen. 1907. — l<'i-ied- 

 berger, D. Z. f. Tm., 1890. XVI. 188. — Erohner, Monh., 1906. XVII. 137. — 

 Haase, B. t. W., 1908. 427. — Horn, Beitr. i. Kenntn. d. chron. Nierenerkrank. d. 

 Sohafes. Diss. Leipzig, 1908. — Joest, Dresdn. B., 1907. 170. — Kitt, Monh., 

 1893. IV. 433 (Lit.). — Lignanx, Ann., 1894. 65. — Marcone, Eev. gen., 1906. 

 VII. 345 (Lit.). — Eegenbogen, B. t. W., 1908. 499. — Sehoppelt, Ung. Vb., 

 1901. 102. — Senator, D. m. W., 1908. 1. — Vamos, B t. W., 1905. 572. 



9. Nephritis Purulenta, 



{Purulent Nephritis. Renal Abscess.) 



Etiology. Purulent nephritis develops through, the in- 

 fluence of pyogenic bacteria which enter the kidneys usually 

 by way of metastasis. The principal occasion for such metas- 

 tases is afforded in purulent diseases of other organs or pyemia, 

 especially endometritis puerperalis, purulent inflammation of 

 the udders, strangles, influenza of horses, gangrenous pneu- 

 monia, purulent lung diseases (Horn found nephritis to have 

 developed upon such a foundation in 0.1% of slaughtered 

 sheep), also phlegmonous pharyngitis, purulent bronchiail 

 catarrh, pyemia due to umbilical infection. According to the 

 experiments of Arenstein an embolic purulent nephritis may 

 develop without the existence of purulent processes in other 

 organs, for instance, owing to the absorption of colon bacteria 

 from the intestine in severe obstipation. Degen, who found 

 hematogenic purulent nephritis in ahout 0.5% of the hogs 

 slaughtered in -the Dresden abattoir, not infrequently found 

 colon bacteria and bacilli of the enteritis group in the diseased 

 portions of the kidneys, which could only have come there 

 from the intestines. .Nevertheless he never succeeded in de- 

 termining the point of entrance of the infectious agents, amoiig 

 which a new variety of bacteria which he had discovered, the 

 Bacillus polymorphus suis, was found frequently, and he con- 

 siders therefore the hematogenic purulent ne,phritis of hogs 

 as a disease arising from cryptogenetic and polybacterial in- 

 fection. Haase finally saw occasionally purulent foci as sequels 

 of chronic swine erysipelas, which contained few erysipelas 

 bacilli. 



Traumatic agencies, especially contusions of the region 

 of the kidneys only in exceptional cases give an impetus for 

 purulent nephritis by preparing the soil for the localization 

 of bacteria which happen to be present in the blood. 



Somewhat more frequently a urogenic origin may be recog- 

 nized, inflammations of the urinary passages, especially those 

 of the renal pelvis extending into the kidneys. (Ostertag saw 

 in lambs repeatedly a purulent nephritis which had been con- 

 tinued from the urinary passages.) Only in exceptional cases 

 do bacteria get into the kidneys from-their vicinity (in the case 

 of perirenal abscess). 



Purulent nephritis is particularly frequent in cattle and 



hogs. 



