Volume 5

A manual of pathological anatomy / By Carl Rokitansky.

  • Rokitansky, Karl, Freiherr von, 1804-1878.
Date:
1849-1854 [v. 1, 1854]
Catalogue details

Licence: Public Domain Mark

Credit: A manual of pathological anatomy / By Carl Rokitansky. Source: Wellcome Collection.

    385/476 (page 365)
    for instance, spontaneous coagulation of diseased fibrin, pus formation within a greater dlood-vessel or within the capil- laries of an organ. The relation of the various crases to the organs and textures, nay, even to particular sections of organs, is manifold. Thus, the croupous fibrin-crases evince a very marked preference for the mucous membrane of the air-passages, and for the lungs themselves; the typhus-crasis, for the mucous membrane of the ileum; the exanthematous crases, for the common integu- ment and for mucous membranes. 2. The anomaly of the general crasis is consecutive; that is, the consequence of a local disease, and especially of local dyscrasial processes, whereof the products are taken up into and affect the general blood-mass. This happens— ; (a) Through resorption of the effused products by means of the lymphatics, or immediately into the veins. (4) Through reception into patent blood-vessels. This pro- cess includes the reception of products thrown out into the cavity of larger blood-vessels,—pus, for example. (c) Most of all, through the off-flowing, and the return into the veins, of plasma degraded in the local process, in a manner corresponding with the quality of the exsudate. [See “ relation of the inflammatory-process to the crasis’’ |. It is, however, to be understood that, neither does a dyscra- sis necessarily always become localized, nor a local dyscrasial process invariably give rise to a consecutive dyscrasis of the entire circulation. In the former case, a certain degree of in- tensity of the dyscrasis is no doubt requisite; in the latter case, the reception of a sufficient quantity of plasma, degraded in the manuer aforesaid by the local process, or else of a hete- rogenously diseased,—for example, of an ichorous or septically constituted—plasma is indispensable. Blood diseases are, moreover, either protopathic, whereby we mean developed out of the normal crasis, or deuteropathic, that is created out of another anomalous crasis. [| Meta-sche- matism.] Deuteropathic crases occur in the simplest manner, as impoverishment of the blood in one or more ingredients, drained away by excessive deposition into textures or upon membranous expansions. Blood diseases are both acute id chronic, and they are