A textbook of obstetrics . Fig. 254.—Spontaneous evolution. engagement of the cephalic or the pelvic extremity of the fetus,as deformities of the pelvis; abnormally large child; monstrosi-ties ; placenta praevia. (3) Abnormal mobility of the fetus, asoccurs in hydramnios, after fetal death, or in premature births. Mechanism.—Strictly speaking, there is no mechanism ofshoulder presentations. The course of these cases is impactionof the shoulder, enormous dilatation of the lower uterine seg-ment, ascension of contraction-ring, destruction ^r. the fetus In-prolonged pressure, and death of the mot
A textbook of obstetrics . Fig. 254.—Spontaneous evolution. engagement of the cephalic or the pelvic extremity of the fetus,as deformities of the pelvis; abnormally large child; monstrosi-ties ; placenta praevia. (3) Abnormal mobility of the fetus, asoccurs in hydramnios, after fetal death, or in premature births. Mechanism.—Strictly speaking, there is no mechanism ofshoulder presentations. The course of these cases is impactionof the shoulder, enormous dilatation of the lower uterine seg-ment, ascension of contraction-ring, destruction ^r. the fetus In-prolonged pressure, and death of the mother by rupture of theuterus or by exhaustion. As a matter of fact, however, nature 394 THE MECHANISM OF LABOR. can, in very exceptional cases, effect delivery by one of threemethods :. Fig. 255.—Rare form of mechanism,known as birth with doubled body (one-sixth natural size, redrawn from Kustner).
Size: 1251px × 1996px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookidtex, booksubjectobstetrics
