Placental bed morphology in black women with eclampsia.

Histopathological changes in the placental bed were studied in 7 primigravid patients with eclampsia and compared with those in 17 normotensive patients. Normal morphological changes, which included trophoblastic invasion of spiral arterioles of the decidual and myometrial segments, were noted in the biopsy specimens taken from normotensive patients but were not seen in the specimens obtained from patients with eclampsia.