The principles and practice of obstetrics . igh, and the little finger toward theleft, if it be the right shoulder in either position. Thereverse occurs, in the position of the thumb and finger,if it be the left shoulder presenting; that is, the thumb,when the palm is turned upward, will be toward themothers left thigh, and the little finger toward theright. Although this be true, a proper diagnosiscannot be fully established without accurate examina-tion of the anatomical parts of the shoulder at the ori-fice of the uterus. Dorso-Pubic Position.—The mechanism of labor inthe dorso-pubic positi
The principles and practice of obstetrics . igh, and the little finger toward theleft, if it be the right shoulder in either position. Thereverse occurs, in the position of the thumb and finger,if it be the left shoulder presenting; that is, the thumb,when the palm is turned upward, will be toward themothers left thigh, and the little finger toward theright. Although this be true, a proper diagnosiscannot be fully established without accurate examina-tion of the anatomical parts of the shoulder at the ori-fice of the uterus. Dorso-Pubic Position.—The mechanism of labor inthe dorso-pubic position of the right shoulder generallyterminates in the manner already intimated. Thobearing-down efforts being established, the shouldersinks more or less through the superior strait, withthe great lateral flexure of the neck on the left side,owing to the occiput being retained above the brim of SPONTANEOUS VERSION. 359 the pelvis, while the breech of the child, by the circu-lar contractions of the uterus, is forced to a greater or Fie. Dorso-Pubic Position of the Right Shoulder. less degree from the right side toward the middle ofthe uterus, thus producing a great lateral flexure ofthe body of the child on its left side. The expulsiveforces, therefore, have a tendency to drive the body ofthe child and head directly downward into the pelvis;but owing to the flexibility of the neck of the child,the head and the thorax meet at the superior strait,and, of course, no further descent is practicable, exceptwhat may be gained by the joint compression of thechest and head, which is very trifling. Hence, thereis usually an arrest to the progress of the child—itperishes—and, without artificial assistance, the motheralso dies from exhaustion, from inflammation, or evenmore speedily from the rupture of the vagina or is a case of impracticable labor. To these general observations there are a few excep-tions in which the mother may eventually deliver her-self. The mode in w
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Keywords: ., boo, bookcentury1800, booksubjectobstetrics, booksubjectpregnancy
