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  2. Placental expulsion - Wikipedia

    en.wikipedia.org/wiki/Placental_expulsion

    As the fetal hypothalamus matures, the activation of the hypothalamic–pituitary–adrenal (HPA) axis initiates labor through two hormonal mechanisms. The end pathway of both mechanisms lead to contractions in the myometrium, a mechanical cause of placental separation, which is due to the sheer force and contractile and involutive changes that occur within the uterus, distorting the placentome.

  3. Placental abruption - Wikipedia

    en.wikipedia.org/wiki/Placental_abruption

    Multiple pregnancy [10] Maternal age: pregnant women who are younger than 20 or older than 35 are at greater risk; Risk factors for placental abruption include disease, trauma, history, anatomy, and exposure to substances. The risk of placental abruption increases sixfold after severe maternal trauma.

  4. Complications of pregnancy - Wikipedia

    en.wikipedia.org/wiki/Complications_of_pregnancy

    Complications of pregnancy are health problems that are related to, or arise during pregnancy. Complications that occur primarily during childbirth are termed obstetric labor complications, and problems that occur primarily after childbirth are termed puerperal disorders. While some complications improve or are fully resolved after pregnancy ...

  5. Pre-eclampsia - Wikipedia

    en.wikipedia.org/wiki/Pre-eclampsia

    The definitive treatment for pre-eclampsia is the delivery of the baby and placenta, but danger to the mother persists after delivery, and full recovery can take days or weeks. [13] The timing of delivery should balance the desire for optimal outcomes for the baby while reducing risks for the mother. [15]

  6. Placental insufficiency - Wikipedia

    en.wikipedia.org/wiki/Placental_insufficiency

    Histopathology of placenta with increased syncytial knotting of chorionic villi, with two knots pointed out. The following characteristics of placentas have been said to be associated with placental insufficiency, however all of them occur in normal healthy placentas and full term healthy births, so none of them can be used to accurately diagnose placental insufficiency: [citation needed]

  7. Placenta - Wikipedia

    en.wikipedia.org/wiki/Placenta

    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 ...

  8. Postpartum physiological changes - Wikipedia

    en.wikipedia.org/wiki/Postpartum_physiological...

    After birth, the fundus contracts downward into the pelvis one centimeter each day. After two weeks the uterus will have contracted and return into the pelvis. [ 9 ] The sensation and strength of postpartum uterine contractions can be stronger in women who have previously delivered a child or children.

  9. Placenta praevia - Wikipedia

    en.wikipedia.org/wiki/Placenta_praevia

    Complications may include placenta accreta, dangerously low blood pressure, or bleeding after delivery. [2] [4] Complications for the baby may include fetal growth restriction. [1] Risk factors include pregnancy at an older age and smoking as well as prior cesarean section, labor induction, or termination of pregnancy.