The practice of obstetrics, designed for the use of students and practitioners of medicine . to 27 per cent, ofthe total. In 2200 cases of confinementI found shoulder presentation occurringin 12 cases, per cent., or i in 183cases. Etiology.—This differs entirely withthe parity of the woman. In primigra-vidae the pelvis in shoulder presentationsis usually contracted. As occasional con-tributory factors may be mentioned vari-ous conditions which predispose to faultypositions in general—hydramnios, mon-strosities, malformation of the uterus, twins. In multigravidse shoulder pre-sentations of
The practice of obstetrics, designed for the use of students and practitioners of medicine . to 27 per cent, ofthe total. In 2200 cases of confinementI found shoulder presentation occurringin 12 cases, per cent., or i in 183cases. Etiology.—This differs entirely withthe parity of the woman. In primigra-vidae the pelvis in shoulder presentationsis usually contracted. As occasional con-tributory factors may be mentioned vari-ous conditions which predispose to faultypositions in general—hydramnios, mon-strosities, malformation of the uterus, twins. In multigravidse shoulder pre-sentations often come about through relaxation of the abdominal walls, andespecially in pendulous abdomen. The causes mentioned as obtaining in primi-gravidae are also operative here to some extent. Unusual mobility of the fetusis another condition believed to favor the persistence of the oblique positionIn the fetus immaturity—by reason of the weak muscles, the relatively largeamount of liquor amnii, and the shape of the fetal ellipse in the premature fetus— Fig. 734.—At the Pelvic Fig. 735.—At the Pelvic Ixlet.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectobstetrics, bookyear1
