Hypertension in pregnancy
<20/40 = chronic preexisting hypertension (?primary ?secondary)
>20/40 = Gestational hypertension
Gest HTN + proteinuria = Preeclampsia
Preeclampsia + generalised tonic-clonic seizures = Eclampsia
nb HELLP (Haemolysis, Elevated Lfts, Low Platlets) may be severe preeclampsia? but 20% have no HTN/proteinuria?
Pathophysiology:
placental vascular malformation
> placental ischaemia > hypoxia > antiangiogenic factor release > vascular permeability/vasoconstriction/microangiopathic haemolysis/activation of coagulation
>20/40 = Gestational hypertension
Gest HTN + proteinuria = Preeclampsia
Preeclampsia + generalised tonic-clonic seizures = Eclampsia
nb HELLP (Haemolysis, Elevated Lfts, Low Platlets) may be severe preeclampsia? but 20% have no HTN/proteinuria?
Pathophysiology:
placental vascular malformation
> placental ischaemia > hypoxia > antiangiogenic factor release > vascular permeability/vasoconstriction/microangiopathic haemolysis/activation of coagulation