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According to the socioeconomic demographic in North America, black women are more likely to come from low income areas and are thus more likely to develop placenta praevia. [ 5 ] In Nova Scotia , infants born to pregnant woman who experience placenta praevia have a mortality rate 3–4 times higher than normal pregnancies.
The term is derived from the Latin; vasa means "vessels" and praevia comes from pre meaning "before" and via meaning "way". In other words, vessels lie before the fetus in the birth canal and in the way. [1] Risk factors include low-lying placenta and in vitro fertilization. [2] Vasa praevia occurs in about 0.6 per 1,000 pregnancies. [2]
Placenta accreta spectrum (PAS) is a medical condition that occurs when all or part of the placenta attaches abnormally to the myometrium (the muscular layer of the uterine wall) during pregnancy. This condition was first documented in medical literature in 1927 [ 1 ] .
The team looked at a series of 1,527 single-child pregnancies that ended in miscarriage - here’s what they found
The mum of the UK's largest family is currently 26 weeks pregnant with her 22nd child.
This can lead to fetal malformations [2] [24] and low birth weight. [ 2 ] [ 6 ] [ 10 ] The umbilical vessels may also be longer compared to normal, [ 2 ] particularly when the site of velamentous cord insertion is in the lower uterine section as the extension of the uterine isthmus as pregnancy advances causes vessel elongation. [ 3 ]
Placenta previa is a condition that occurs when the placenta fully or partially covers the cervix. [13] Placenta previa can be further categorized into complete previa, partial previa, marginal previa, and low-lying placenta, depending on the degree to which the placenta covers the internal cervical os.
Ischemic placental disease leads to the attachment of the placenta to the uterine wall to become under-perfused, causing uteroplacental ischemia. Where the term overarches the pathology associated with preeclampsia , placental abruptions and intrauterine growth restriction (IUGR). [ 3 ]