A textbook of obstetrics . Fig. 260.—The expulsion of the placenta edgewise (Varnier). os uteri in such a manner that atmospheric pressure determinesits retention. In such cases a finger may be hooked over oneedge to pull it down. Adhesion of the placenta to the uterine wall occurs about-once. Fig. 261.—The expulsion of the placenta inverted (Varnier). in 312 cases. The adhesion is rarely complete ; a part of theplacenta is usually detached. This condition of affairs neces-sarily gives rise to profuse hemorrhage. The placental sinusesare torn when the placenta is detached, but the womb can not
A textbook of obstetrics . Fig. 260.—The expulsion of the placenta edgewise (Varnier). os uteri in such a manner that atmospheric pressure determinesits retention. In such cases a finger may be hooked over oneedge to pull it down. Adhesion of the placenta to the uterine wall occurs about-once. Fig. 261.—The expulsion of the placenta inverted (Varnier). in 312 cases. The adhesion is rarely complete ; a part of theplacenta is usually detached. This condition of affairs neces-sarily gives rise to profuse hemorrhage. The placental sinusesare torn when the placenta is detached, but the womb can not THE MECHANISM OF LABOR. contract and close them, because of the attached area and inconsequence of the retention of the whole placental mass withinthe uterus (see Fig. 262). Diagnosis.—Credes method of expression fails completely toexpress the placenta ; the womb will not firmly contract, andthere is alarming hemorrhage. Treatment.— The hand should be inserted alone the cord as «
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Keywords: ., bookcentury1800, bookdecade1890, bookidtex, booksubjectobstetrics
