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Difference between revisions of "Placenta"
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hypertension
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*The change in mass/week is approximately linear and equal to 300 grams / 14 weeks ~ 20 grams/week. | *The change in mass/week is approximately linear and equal to 300 grams / 14 weeks ~ 20 grams/week. | ||
*The spread in mass between 10% and 90%, crudely estimated, is 200 grams (for GA=26-40). | *The spread in mass between 10% and 90%, crudely estimated, is 200 grams (for GA=26-40). | ||
==Hypertensive changes== | |||
Features:<ref name=pmid6754249>{{cite journal |author=Soma H, Yoshida K, Mukaida T, Tabuchi Y |title=Morphologic changes in the hypertensive placenta |journal=Contrib Gynecol Obstet |volume=9 |issue= |pages=58–75 |year=1982 |pmid=6754249 |doi= |url=}}</ref> | |||
*Enlarged endothelial cells - fetal capillaries. | |||
*Atherosis of the spiral arteries - placental bed (maternal). | |||
Associated changes:ref name=pmid6754249/> | |||
*Placental infarcts. | |||
*Increased syncytial knots. | |||
*Hypovascularity of the villi. | |||
*Cytotrophoblastic proliferation. | |||
*Thickening of the trophoblastic basement membrane. | |||
==Tumours== | ==Tumours== | ||