. Obstetrics for nurses. ters ex-tend from the corre-sponding sacro-iliac syn-chondroses to the oppo-s i te iliopectineal emi-nences in front. Theusual measurements are:conjugata vera, 11 centi-meters (-iVs inches) ;transverse diameter, (SVs inches) and the oblique diameters, centimeters(5V5 inches). The conjugata vera is therefore the shortest diameterof the inlet, and when it is shortened in abnormal pelves, may seriouslyinterfere with the course of labor. In many patients it is possible to palpate the promontory of thesacrum during vaginal examination and to measure qu
. Obstetrics for nurses. ters ex-tend from the corre-sponding sacro-iliac syn-chondroses to the oppo-s i te iliopectineal emi-nences in front. Theusual measurements are:conjugata vera, 11 centi-meters (-iVs inches) ;transverse diameter, (SVs inches) and the oblique diameters, centimeters(5V5 inches). The conjugata vera is therefore the shortest diameterof the inlet, and when it is shortened in abnormal pelves, may seriouslyinterfere with the course of labor. In many patients it is possible to palpate the promontory of thesacrum during vaginal examination and to measure quite accuratelyits distance from the lower margin of the symphysis by marking offwith the finger of the free hand the point where the symphysis inpingesupon the examining fingers. After the examining hand has been with-drawn the distance is measured directly and is designated the diagonalconjugate. Normally the measurement is to centimeters (5to 5Yd inches) or to centimeters (^/^ to Vo inch) greater than. 17.—Sagittal section through normalshowing planes and diameters. pelvis, ANATOMY OF THE FEMALE ORGANS 29 the tnio eonjiigato. In practice Iho latter moasuroment is estimatedby i^ubstraetiiii;- ^.0 ceiilinieters from llic detennined diagonal plane of the inferior strait or the pel vie outlet forms the lowerend of the birth eanal. It oci-upies the area between the ischial tub-erosities on the two sides, the lower margin of the symphysis anteriorlyand the tip of the coccyx posteriorly. The distance between the innersides of the ischial tuberosities is designated the transverse diameterand measures normally centimeters (4-/., inches). The antero-posterior diameter extends from the lower margin of the symphysis tothe tip of the coccyx; this distance is usually centimeters (S*/;
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectobstetrics, bookyear1
