A textbook of obstetrics . Fig- 531-—The direction of the forceps-handles at the inferior strait 11 Lodge) 47 75* OBS TE TRIC OPERA TIONS. of course, in the foregoing description. As the blades lie aftertheir insertion it is impossible to loek them, for both of them haveascended the posterior inclined plane of the pelvis, after being rotated outward on their long axes. It is necessary to bring one of them forward toward the region of the acetabulum, if thehead lies in the oblique position, before the blades will lock.( Obviously, the blade to be rotated forward within the pelvisdiffers with th
A textbook of obstetrics . Fig- 531-—The direction of the forceps-handles at the inferior strait 11 Lodge) 47 75* OBS TE TRIC OPERA TIONS. of course, in the foregoing description. As the blades lie aftertheir insertion it is impossible to loek them, for both of them haveascended the posterior inclined plane of the pelvis, after being rotated outward on their long axes. It is necessary to bring one of them forward toward the region of the acetabulum, if thehead lies in the oblique position, before the blades will lock.( Obviously, the blade to be rotated forward within the pelvisdiffers with the different positions of the presenting part. In theleft occipitoanterior position of a vertex presentation the right-. Fig. 532.—The direction of the forceps-handles with the head at the superior -tint. hand blade must be rotated forward, the left-hand blade lying asit was when first introduced. To rotate the right blade thehandle is lightly supported by the fingers of the right hand, whilethe first two fingers of the left hand are inserted under the heelof the blade and gently pry it upward, outward, and then the operator finds it more convenient, he may reverse the there is difficulty in locking the blades, a depression oi bothhandles toward the perineum often facilitates their conjunction. The handles being approximated and the blades joined, theoperator takes the grip upon the instrument shown in figure 530. forceps. 739 The forefinger of the right hand is kept extended against thechilds scalp to detect the first inclination on the part of the in-strument to slip. Too great compression of the childs headmay be avoided by placing a folded towel between the handles,and by using
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Keywords: ., bookcentury1800, bookdecade1890, bookidtex, booksubjectobstetrics
