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Difference between revisions of "Placenta"
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===Associations=== | ===Associations=== | ||
*Associated with congenital abnormalities, esp. cardiac - '''key point'''.<ref name=Ref_WMSP464>{{Ref WMSP|464}}</ref> | *Associated with congenital abnormalities, esp. cardiac - '''key point'''.<ref name=Ref_WMSP464>{{Ref WMSP|464}}</ref> | ||
**Thought to be an acquired defect (as prevalence is lower | **Thought to be an acquired defect (as prevalence is lower early in gestation). | ||
*May be seen in association of other cord abnormalities (e.g. marginal insertion, velamentous insertion). | *May be seen in association of other cord abnormalities (e.g. marginal insertion, velamentous insertion). | ||
*In apparently well (liveborn) infants it is associated with (occult) renal abnormalities, specifically vesico-ureteric reflux; there is no evidence for other abnormalities.<ref name=pmid15613529>{{cite journal |author=Srinivasan R, Arora RS |title=Do well infants born with an isolated single umbilical artery need investigation? |journal=Arch. Dis. Child. |volume=90 |issue=1 |pages=100–1 |year=2005 |month=January |pmid=15613529 |pmc=1720078 |doi=10.1136/adc.2004.062372 |url=}}</ref> | *In apparently well (liveborn) infants it is associated with (occult) renal abnormalities, specifically vesico-ureteric reflux; there is no evidence for other abnormalities.<ref name=pmid15613529>{{cite journal |author=Srinivasan R, Arora RS |title=Do well infants born with an isolated single umbilical artery need investigation? |journal=Arch. Dis. Child. |volume=90 |issue=1 |pages=100–1 |year=2005 |month=January |pmid=15613529 |pmc=1720078 |doi=10.1136/adc.2004.062372 |url=}}</ref> | ||