Study note
Obstetrics & Gynecology
Hypertensive Disorders in Pregnancy
Prostaglandin imbalance in pre-eclampsia
THE CONTEXT
Pre-eclampsia
is associated with an imbalance between vasodilator prostaglandin and vasoconstrictor thromboxane.
Opposing vascular mediators
•
There
is a relative or absolute deficiency of the vasodilator prostaglandin PGI₂ from the vascular endothelium.
•
Platelets show increased synthesis of thromboxane A₂ (
TXA₂
), a potent vasoconstrictor.
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