A treatise on the science and practice of midwifery . to its FundalPortion. (After Duncan.) ing on proliferation of its interstitial tissue. Duncan has found thatthe hypertrophied decidua is always in a state of fatty degeneration,more advanced in some places than in The result of thesealterations is frequently to produce dwindling or death of the ovum,which, however, retains its connection with the decidua, until, aftera lapse of time, the decidua is expelled in the form of a thick tri-angular fleshy substance, with the atrophied ovum attached to somepart of its inner surface. In oth
A treatise on the science and practice of midwifery . to its FundalPortion. (After Duncan.) ing on proliferation of its interstitial tissue. Duncan has found thatthe hypertrophied decidua is always in a state of fatty degeneration,more advanced in some places than in The result of thesealterations is frequently to produce dwindling or death of the ovum,which, however, retains its connection with the decidua, until, aftera lapse of time, the decidua is expelled in the form of a thick tri-angular fleshy substance, with the atrophied ovum attached to somepart of its inner surface. In other cases, in which the hyperplasiahas advanced to a less extent, the nutrition of the foetus is not inter-fered with, and pregnancy may continue to term, the changes in thedecidua being recognizable after delivery. Other diseases besidesendometritis may give rise to similar alterations in the decidua, oneof these being, as Yirchow maintains, syphilis. The converse con- Vireliows Archiv fur Path. 1868. Researches in Obstetrics, p. 293. 214 PREGNANCY,. Imperfectly developed Decidua Yera, with theOvum. (After Duncan.) Fig. 83. dition, and imperfect develop- ment of the decidua, especiallyof the decidua reflexa, has alsobeen noted as a cause of abor-tion. The ovum will then hangloosely in the uterine cavity,without the support which thegrowth of the decidua reflexaaround it ought to afford, andits premature expulsion readilyfollows (Fig. 83). Hydrorrhea Gravidarum.—The peculiar condition knownas hydrorrhea gravidarum mostprobably depends on some ob-scure morbid state of the uterinemucous membrane. By this ismeant a discharge of clear wateryfluid at intervals during preg-nancy. It may happen at anyperiod of gestation, but it is most commonly met with in the lattermonths. It may commence with a mere dribbling, or there may bea sudden and copious discharge of fluid. Afterwards the wateryfluid, which is generally of a pale yellowish color, and transparent,like the liquor amnii, may c
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