File:A System of midwifery - including the diseases of pregnancy and the puerperal state (1875) (14782501632).jpg

Identifier: systemofmidwifer00leis (find matches)
Title: A System of midwifery : including the diseases of pregnancy and the puerperal state
Year: 1875 (1870s)
Authors: Leishman, William, 1834-1894 Parry, John S. (John Stubbs), 1843-1876
Subjects: Obstetrics
Publisher: Philadelphia : Henry C. Lea
Contributing Library: Yale University, Cushing/Whitney Medical Library
Digitizing Sponsor: Open Knowledge Commons and Yale University, Cushing/Whitney Medical Library

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rationwhich exercises the most undoubted influence upon the ovum in in-ducing premature expulsion consists in a metamorphosis of portions ofthe maternal and foetal structures of the placenta. This may occur atany period of intra-uterine life, and the appearances presented by thecells of the decidua in the healthy and degenerated placenta are indi-cated in the figure, where the two are similarly magnified and shownin juxtaposition. It is unnecessary to follow the minute and interest-ing series of changes which have been traced in reference to this formof degeneration. It seems, however, to be clearly proved that it isfrequently induced by constitutional syphilis. The decidua, placenta,and other parts of the ovum are, like all other vital textures, liable tocongestive and inflammatory affections, which may arrest the vitalityof the foetus, either by inducing some of the various forms of degener-ation, or by causing sanguineous effusion into the tissue of the placenta. xxir.) CAUSES. 371
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Cells of fatty and healthy decidua. which has occasionally been found to contain purulent deposits. Whenthe blood effused is considerable in quantity, it constitutes what Cru-veilhier has described un- Fia. 130. der the name of Apoplexyof the Placenta, which byinterrupting the circula-tion, may cause death ofthe foetus, and, conse-quently, inevitable abor-tion, although the foetusmay be retained in uterofor a considerable time,while the degeneratedstructures of the ovumundergo further change.Any of the numerous dis-eases to which the foetusis liable may cause itsdeath, and it is believedthat twisting or knottingof the cord, either upon itself or round the neck of the child, may have a similar result. Likethe placenta, and other tissues of the ovum, the cord too is subject tospecial diseases, in the course of which its function is destroyed. Be-sides this, the facts stated by Mauriceau, Stein, and others, seem toprove that the cord, when too short, may be so dragged upon as toendanger

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