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Canadian Medical Association Journal logoLink to Canadian Medical Association Journal
. 1978 Apr 22;118(8):936–940.

Essential hypertension and pregnancy.

R A Bear, N Erenrich
PMCID: PMC1818219  PMID: 348289

Abstract

Approximately 1% of pregnancies are complicated by essential hypertension. During pregnancy the blood pressure often stabilizes or improves. In patients with sustained hypertension, prospective controlled studies have demonstrated enhanced fetal survival when the blood pressure was controlled with antihypertensive medication. Such medication must be chosen carefully to avoid fetal and mateerial toxicity, and diuretics and salt restriction during pregnancy should be avoided. Among patients with essential hypertension the problem accelerates late in pregnancy in 2% to 11%; the acceleration may be predicted by determination of maternal mean arterial pressures and intravascular volumes early in pregnancy. The treatment of accelerated hypertension is identical to that of severe pre-eclampsia. Fetal loss is considerable but can be lessened by careful fetal and maternal monitoring and early controlled delivery. The risks of pregnancy in most patients with essential hypertension are small, and essential hypertension is not a uniform contraindication to pregnancy.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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