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Hypertension in pregnancy

P Kincaid-Smith1

  • 1Department of Pathology, University of Melbourne, Parkville, Victoria, Australia.

Blood Pressure
|March 1, 1994
PubMed

From the clinical point of view proteinuric hypertension or preeclampsia is the most important form of hypertension in pregnancy and carries the greatest risks for mother and foetus. The syndrome 'preeclampsia' differs from other types of hypertension and its effects on mother and foetus are not clearly benefited by lowering the blood pressure with drugs. The characteristic morphological changes and altered vascular reactivity which develop in preeclampsia commence at about 14 weeks gestation, long before hypertension or proteinuria appear. Many abnormalities in coagulation mechanisms appear in preeclampsia and some may play an important part in pathogenesis. Increased plasminogen activator inhibitor may play a key role. Antihypertensive drugs used during pregnancy may reduce foetal mortality and the incidence of preeclampsia. Calcium supplementation and aspirin may reduce the incidence of preeclampsia in high risk subjects. Heparin and dipyridamole may reduce the risk of preeclampsia in high risk patients with renal disease.

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