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In an occiput posterior position, labor becomes prolonged, and more operative interventions are deemed necessary. [4] The prevalence of the persistent occiput posterior is given as 4.7%. [4] The vertex presentations are further classified according to the position of the occiput, both right, left, or transverse and anterior or posterior:
Sacrum posterior (SP)—the buttocks face posteriorly. Shoulder presentations with transverse lie are classified into four types, based on the location of the scapula (shoulder blade). This presentation needs to be delivered by cesarean section. Left scapula-anterior (LSA) Right scapula-anterior (RSA) Left scapula-posterior (LSP)
Sacrum anterior (SA)—the buttocks face anteriorly. Sacrum posterior (SP)—the buttocks face posteriorly. Shoulder presentation with transverse lie are classified into four types, based on the location of the scapula (shoulderblade); note: the presentation is significantly different from asynclitic positioning , and in most cases needs to be ...
Posterior asynclitism is when the fetal occiput is facing the mother's spine, and anterior asynclitism is when the fetal occiput is facing the mother's belly. The most common and preferred type of asynclitism is the left occiput anterior asynclitism because the baby's head enters the pelvis in such a way that it minimizes the circumference of ...
Pregnant women have a decreased perception of balance during quiet standing, which is confirmed by an increase in anterior-posterior (front to back) sway. [41] This relationship heightens as pregnancy progresses and significantly decreases postpartum. To compensate for the decrease in balance stability (both actual and perceived), stance width ...
Back labor (less commonly called posterior labor [1] [2]) is a term referring to sensations of pain or discomfort that occur in the lower back, just above the tailbone, to a mother during childbirth. [ 3 ]
A retroverted uterus (tilted uterus, tipped uterus) is a uterus that is oriented posteriorly, towards the rectum in the back of the body. This is in contrast to the typical uterus, which is oriented forward (slightly "anteverted") toward the bladder, with the anterior part slightly concave.
Shoulder dystocia is when, after vaginal delivery of the head, the baby's anterior shoulder gets caught above the mother's pubic bone. [3] [1] Signs include retraction of the baby's head back into the vagina, known as "turtle sign". [1] Complications for the baby may include brachial plexus injury, or clavicle fracture.