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Manual placenta removal is the evacuation of the placenta from the uterus by hand. [6] It is usually carried out under anesthesia or more rarely, under sedation and analgesia . A hand is inserted through the vagina and cervix into the uterine cavity and the placenta is detached from the uterine wall and then removed manually.
The accumulating blood pushes between the layers of the decidua, pushing the uterine wall and placenta apart. When the placenta is separated, it is unable to exchange waste, nutrients, and oxygen, a necessary function for the fetus's survival. The fetus dies when it no longer receives enough oxygen and nutrients to survive. [9]
The placenta (pl.: placentas or placentae) is a temporary embryonic and later fetal organ that begins developing from the blastocyst shortly after implantation.It plays critical roles in facilitating nutrient, gas and waste exchange between the physically separate maternal and fetal circulations, and is an important endocrine organ, producing hormones that regulate both maternal and fetal ...
This leads to decrease oxygen carried past the maternal villi into the intervillus space. The lack of terminal dilation and inclining blood velocity causes shredding of the villi into the maternal blood, releasing blood coagulants activating the coagulation cascade. Which then leads to blocking of the blood vessels causing placental infarction. [5]
The placenta, once ejected from the womb, has no circulation and quickly dies; [4] and within 3–10 days postpartum the umbilical cord dries and detaches from the baby's belly. [2] The practice requires the mother and baby to be home bound as they wait for the placenta and umbilical cord to dry, decompose, and separate from the baby. [10]
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Although the fetus was in a similar state of decomposition, the umbilical cord was intact and still attached to the placenta inside the uterus. This was the first forensic case in which it could be concluded that coffin birth had occurred based on the position of the bodies and the clear attachment of the umbilical cord to the un-expelled ...
Fetal hemoglobin enhances the fetus' ability to draw oxygen from the placenta. This is facilitated by the hemoglobin molecule that made up of two alpha and two gamma chains (2α2γ). Its oxygen-hemoglobin dissociation curve is shifted to the left, meaning that it is able to absorb oxygen at lower concentrations than adult hemoglobin. This ...