The practice of obstetrics, designed for the use of students and practitioners of medicine . lcher. The general result of these high pelvic positions is naturally one ofgravitation. The pelvic viscera sink toward the diaphragm, and the result fromthe obstetrical standpoint is twofold. First, the fetus sinks away from the cer-vix, with the result in the first stage that the uterine contractions are diminishedin force and frequency. The second consequence of the high pelvic posturesis that the pelvis becomes more ample, so that the entire hand may readily beintroduced. The combined results of el
The practice of obstetrics, designed for the use of students and practitioners of medicine . lcher. The general result of these high pelvic positions is naturally one ofgravitation. The pelvic viscera sink toward the diaphragm, and the result fromthe obstetrical standpoint is twofold. First, the fetus sinks away from the cer-vix, with the result in the first stage that the uterine contractions are diminishedin force and frequency. The second consequence of the high pelvic posturesis that the pelvis becomes more ample, so that the entire hand may readily beintroduced. The combined results of elevation of the pelvis give the obstetriciana high degree of control over certain phenomena of normal and pathologicallabor. He can delay rupture of the bag of waters, antagonize over-strongpains, facilitate certain manoeuvers which are best done with the entire handin the vagina, and prevent the redescent of the small parts of the fetus. I, Knee-chest Posture (Fig. 1049).—Sims,* in his original description of thisposition, states that the woman should first kneel and then bend the body. Fig. 1045.—Dorsal Posture with Moderate Flexion of the Thighs, showing thbParturient Tract and the Degree of Pelvic Inclination. Note the slight up-ward rotation of the symphysis and enlargement of the pelvic outlet.—(From a pho-tograph taken at the Emergency Hospital.) forward till the head reaches the level of the table, where it should rest uponthe two hands. The weight is supported by the left parietal bone, the elbowsbeing thrown out widely at the sides. The knees should be 8 or 10 inches( or cm.) apart and the thighs should form nearly a right angle withthe table. The woman thus supported should remain perfectly quiet, only thenecessary muscles being contracted. After a few moments interval the abdomi-nal and pelvic viscera gravitate toward the epigastrium. It is apparent thatin the knee-elbow position the weight in front is supported upon the forearms,while a knee-chest po
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectobstetrics, bookyear1
