A treatise on the science and practice of midwifery . in its new position. The mucous mem-brane becomes hypertrophied, much in the same way as that of theuterus under similar circumstances, so that it becomes developed intoa sort of pseudo-decidua. Inasmuch, however, as the mucous coat ofthe tubes is not furnished with tubular glands, a true decidua canscarcely be said to exist, nor is there any growth of membrane aroundthe ovum analogous to the decidua reflexa. The ovum is therefore,comparatively speaking, loosely attached to its abnormal situation, andhence hemorrhage from laceration of the
A treatise on the science and practice of midwifery . in its new position. The mucous mem-brane becomes hypertrophied, much in the same way as that of theuterus under similar circumstances, so that it becomes developed intoa sort of pseudo-decidua. Inasmuch, however, as the mucous coat ofthe tubes is not furnished with tubular glands, a true decidua canscarcely be said to exist, nor is there any growth of membrane aroundthe ovum analogous to the decidua reflexa. The ovum is therefore,comparatively speaking, loosely attached to its abnormal situation, andhence hemorrhage from laceration of the chorion villi can very readilytake place. It is seldom that any development of the chorion villi into distinctplacental structure is observed; this is probably owing to the fact thatlaceration and death generally occur before the period at which theplacenta is normally formed. The muscular coat of the tube soonbecomes hypertrophied, and as the size of the ovum increases thefibres are separated from each other, so that the ovum protrudes at Fig. Tubal Pregnancy. (From a Specimen in the Museum of Kings Coll certain points through them, and at these it is only covered by thestretched and attenuated mucous and peritoneal coats of the tube. Atthis time the tubal pregnancy forms a smooth oval tumor, which, asa rule, has not formed any adhesions to the surrounding structures(Fig. 82). The part of the tube unoccupied by the ovum may be 176 PREGNANCY. found unaltered, and permeable in both directions; or, more frequently,it becomes so stretched and altered that its canal cannot be frequently it is that part of the tube nearest the uterus whichcannot be made out. The condition of the uterus in this as in otherforms of extra-uterine pregnancy has been the subject of considerablediscussion. It is now universally admitted that the uterus undergoesa certain amount of sympathetic engorgement, the cervix becomes soft-ened, as in natural pregnancy, and the mucous membrane dev
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectobstetrics, bookyear1
