Practical midwifery; handbook of treatment . Fig. 8.—Diagrams Illustrating the Action of the BIembranes in DilatingTHE Os. The force of fluid pressure is always exerted at right angles to the surface;and in all of the diagrams, if the diagonal line represents the total force, the hne Arepresents the portion of that force which is useful in dilating the os, and the line Bthat which is wasted. the OS and membranes and swept around the whole circumfer-ence in order to break up any adhesions which may be present;if, when this has been done, the membranes still fail to bulge, thehead should be gent
Practical midwifery; handbook of treatment . Fig. 8.—Diagrams Illustrating the Action of the BIembranes in DilatingTHE Os. The force of fluid pressure is always exerted at right angles to the surface;and in all of the diagrams, if the diagonal line represents the total force, the hne Arepresents the portion of that force which is useful in dilating the os, and the line Bthat which is wasted. the OS and membranes and swept around the whole circumfer-ence in order to break up any adhesions which may be present;if, when this has been done, the membranes still fail to bulge, thehead should be gently lifted by the fingers and a portion of thewater allowed to pass by it in order to form the fore-waters. In primiparje in whom the head has already entered the pelvis,the cervix is sometimes fouxid to be so stretched around the un-dilated os, as to form an almost membranous .hood over the pre-senting part. In this condition the formation of a bag of fore-waters is impossible, and the muscular fibres of the cervix areusually so far paral
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectmidwifery, bookyear18
