A system of obstetrics . of Separate Twins—Besson4 states that the predis- 1 Traite pratique des Accouchement*. 2 Condensed from report in Arch. med. du Midi, 1846. 3 According to Braun, quoted by Zweifel. such difficulty occurs once in 90,000labors. 4 Dystocie specielle dans les Accouchement* multiples. ANOMALIES CAUSED BY DISEASE OF THE FCETUS. 775 posing causes to such obstacle to birth are the great size of the pelvis,the small size of the foetuses, and their occupying one sac. Interfer-ence with the natural course of labor, as by premature rupture of thebag of waters or the untimely admin
A system of obstetrics . of Separate Twins—Besson4 states that the predis- 1 Traite pratique des Accouchement*. 2 Condensed from report in Arch. med. du Midi, 1846. 3 According to Braun, quoted by Zweifel. such difficulty occurs once in 90,000labors. 4 Dystocie specielle dans les Accouchement* multiples. ANOMALIES CAUSED BY DISEASE OF THE FCETUS. 775 posing causes to such obstacle to birth are the great size of the pelvis,the small size of the foetuses, and their occupying one sac. Interfer-ence with the natural course of labor, as by premature rupture of thebag of waters or the untimely administration of ergot, has been regard-ed as determining the accident. No matter what the presentations, interlocking of the foetuses mayoccur. In some instances—comparatively rare, however—the difficultymay be from both heads presenting simultaneously at the inlet: theycannot enter at the same time; one is in the way of the other. Morefrequently, as shown in the subjoined illustration from Barnes, one head Fig. Shows Head-locking, both children presenting head first. descends into the pelvis, and the other, quickly following, is forceddown, usually upon the neck of the other, and the further progress ofeach is arrested. The first head is delivered spontaneously or by theforceps, and then the arrest comes, or it may be before such the illustration (Fig. 301), also taken from Barnes, the first childpresenting by the pelvis and the second by the head, the former hasbeen delivered, until arrest comes by the chin catching upon the chinof the latter. In some cases the head of the second child is fixed upon the thoraxof the first. The locking of the heads may not be, as in the illustra-tions, by the chins, but by the occiputs or by a chin and occiput, orsimply by the sides of the heads. If both foetuses present by the pelvis, difficulty may arise from thesimultaneous descent of the lower limbs. In a case of such descent 776 ANOMALIES OF THE FORCES OF LABOR. repor
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectobstetrics, bookyear1
