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  2. Placental abruption - Wikipedia

    en.wikipedia.org/wiki/Placental_abruption

    Along with placenta previa and uterine rupture it is one of the most common causes of vaginal bleeding in the later part of pregnancy. [6] Placental abruption is the reason for about 15% of infant deaths around the time of birth. [2] The condition was described at least as early as 1664. [7]

  3. 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]

  4. Ectopic pregnancy - Wikipedia

    en.wikipedia.org/wiki/Ectopic_pregnancy

    Ectopic pregnancy is a complication of pregnancy in which the embryo attaches outside the uterus. [5] Signs and symptoms classically include abdominal pain and vaginal bleeding, but fewer than 50 percent of affected women have both of these symptoms. [1]

  5. Placenta abnormalities could be the reason for miscarriages ...

    www.aol.com/news/placenta-abnormalities-could...

    The team looked at a series of 1,527 single-child pregnancies that ended in miscarriage - here’s what they found

  6. Obstetrical bleeding - Wikipedia

    en.wikipedia.org/wiki/Obstetrical_bleeding

    Besides placenta previa and placental abruption, uterine rupture can occur, which is a very serious condition leading to internal or external bleeding. Bleeding from the fetus is rare, but may occur with two conditions called vasa previa and velamentous umbilical cord insertion where the fetal blood vessels lie near the placental insertion site unprotected by Wharton's jelly of the cord. [11]

  7. Intrauterine hypoxia - Wikipedia

    en.wikipedia.org/wiki/Intrauterine_hypoxia

    Intrauterine hypoxia can be attributed to maternal, placental, or fetal conditions. [12] Kingdom and Kaufmann classifies three categories for the origin of fetal hypoxia: 1) pre-placental (both mother and fetus are hypoxic), 2) utero-placental (mother is normal but placenta and fetus is hypoxic), 3) post-placental (only fetus is hypoxic).

  8. Maternal physiological changes in pregnancy - Wikipedia

    en.wikipedia.org/wiki/Maternal_physiological...

    Later in pregnancy, the woman might develop physiological hydronephrosis and hydroureter, which are normal. [33] Progesterone causes vasodilatation and increased blood flow to the kidneys, and as a result glomerular filtration rate (GFR) commonly increases by 50%, returning to normal around 20 weeks postpartum . [ 22 ]

  9. Early pregnancy bleeding - Wikipedia

    en.wikipedia.org/wiki/Early_pregnancy_bleeding

    About 30% of women have bleeding in the first trimester (0 to 14 weeks gestational age). [1] [5] Bleeding in the second trimester (12 to 24 weeks gestational age) is less common. [6] About 15% of those who realize they are pregnant have a miscarriage. [1] Ectopic pregnancy occurs in under 2% of pregnancies. [1]