Pregnancy and Chronic High Blood Pressure

Topic Overview

Women with chronic high blood pressure require special medical care before, during, and after their pregnancies.

• Some blood pressure medicines are not recommended for use during pregnancy and breastfeeding. Talk to your doctor if you take blood pressure medicines and are pregnant or planning a pregnancy.
• High blood pressure (140/90 mm Hg or higher) during a pregnancy increases the risks of:
  • Pre-eclampsia.
  • Fetal growth problems (intrauterine growth restriction, or IUGR).
  • Abruptio placenta.

Many women with chronic high blood pressure need little or no medicine during pregnancy. Blood pressure usually falls during early pregnancy, so medicine is often not needed unless blood pressure increases to higher levels.

To reduce your risk for pre-eclampsia, your doctor may recommend that you take low-dose aspirin during the second and third trimesters of your pregnancy.

Undiagnosed chronic high blood pressure and pregnancy

High blood pressure is a disorder with few or no symptoms. When planning a pregnancy, see your doctor for a review of pregnancy risks, such as high blood pressure.

Women with elevated blood pressure during pregnancy receive frequent blood pressure readings, blood tests, and urine screens for signs of pre-eclampsia.