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  2. Vasa praevia - Wikipedia

    en.wikipedia.org/wiki/Vasa_praevia

    Risk factors include low-lying placenta, in vitro fertilization. [1] Vasa praevia occurs in about 0.6 per 1,000 pregnancies. [1] The term "vasa previa" is derived from the Latin; "vasa" means vessels and "previa" comes from "pre" meaning "before" and "via" meaning "way". In other words, vessels lie before the fetus in the birth canal and in the ...

  3. Velamentous cord insertion - Wikipedia

    en.wikipedia.org/wiki/Velamentous_cord_insertion

    Velamentous cord insertion impacts fetal development during pregnancy by impairing the development of the placenta [2] and modifying the efficiency of placental function. [17] This can manifest in a range of adverse perinatal outcomes, such as fetal growth restriction, [ 4 ] [ 5 ] placental abruption, [ 3 ] [ 6 ] [ 16 ] [ 18 ] abnormal fetal ...

  4. 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.

  5. Cephalic presentation - Wikipedia

    en.wikipedia.org/wiki/Cephalic_presentation

    In obstetrics, a cephalic presentation or head presentation or head-first presentation is a situation at childbirth where the fetus is in a longitudinal lie and the head enters the pelvis first; the most common form of cephalic presentation is the vertex presentation, where the occiput is the leading part (the part that first enters the birth canal). [1]

  6. Implantation (embryology) - Wikipedia

    en.wikipedia.org/wiki/Implantation_(embryology)

    However, its most prominent time is during the early stages of pregnancy, during implantation. Its function as a surrounding tissue is replaced by the definitive placenta. However, some elements of the decidualization remain throughout pregnancy. [30] The compacta and spongiosa layers are still observable beneath the decidua in pregnancy.

  7. Presentation (obstetrics) - Wikipedia

    en.wikipedia.org/wiki/Presentation_(Obstetrics)

    Presentation of twins in Der Rosengarten ("The Rose Garden"), a German standard medical text for midwives published in 1513. In obstetrics, the presentation of a fetus about to be born specifies which anatomical part of the fetus is leading, that is, is closest to the pelvic inlet of the birth canal.

  8. Placental abruption - Wikipedia

    en.wikipedia.org/wiki/Placental_abruption

    Placental abruption is when the placenta separates early from the uterus, in other words separates before childbirth. [2] It occurs most commonly around 25 weeks of pregnancy. [2] Symptoms may include vaginal bleeding, lower abdominal pain, and dangerously low blood pressure. [1]

  9. Maternal physiological changes in pregnancy - Wikipedia

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

    The step lengthens as the pregnancy progresses, due to weight gain and changes in posture. On average, a woman's foot can grow by a half size or more during pregnancy. In addition, the increased body weight of pregnancy, fluid retention, and weight gain lowers the arches of the foot, further adding to the foot's length and width.