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Hypertension During Pregnancy


Hypertension is high blood pressure (BP). Your BP is the force of your blood moving against the walls of your arteries. Normal BP is less than 120/80. Hypertension in pregnancy is defined as a BP of 140/90 or greater. It is important to get screened and treated for hypertension during pregnancy. This can prevent problems with you or your baby. Hypertension during pregnancy can be defined as any of the following:
  • Chronic hypertension means you have high BP before week 20 of your pregnancy. Hypertension may have been diagnosed before you became pregnant.
  • Gestational hypertension means you develop high BP between week 20 and 37 of your pregnancy. It may also develop after week 37 of your pregnancy.
  • Preeclampsia is a condition that can develop during week 20 of your pregnancy, or later. Your BP may be 160/100 or higher. You may also have protein in your urine. Preeclampsia can cause mild to life-threatening health problems for you and your unborn baby. You are at risk for developing preeclampsia if you have chronic or gestational hypertension.


Call 911 or have someone else call for any of the following:

  • You have any of the following signs of a heart attack:
    • Squeezing, pressure, or pain in your chest that lasts longer than 5 minutes or returns
    • Discomfort or pain in your back, neck, jaw, stomach, or arm
    • Trouble breathing
    • Nausea or vomiting
    • Lightheadedness or a sudden cold sweat, especially with chest pain or trouble breathing
  • You have a seizure.
  • You faint or lose consciousness.

Return to the emergency department if:

  • You have a severe headache or vision loss.
  • You have weakness in an arm or leg.
  • You have bleeding from your vagina.
  • You have fluid leaking from your vagina that does not stop.
  • You feel a gush of fluid from your vagina.
  • You have contractions that happen every 5 minutes or sooner, and last for more than 60 seconds.
  • You feel a change in your baby's movement, or you feel fewer than 6 to 10 movements in an hour.
  • You urinate less than usual or stop urinating.
  • You have severe abdominal pain with nausea and vomiting.
  • You have new or increased swelling in your face or hands.

Contact your healthcare provider if:

  • You have a fever.
  • You have new or increased swelling in your legs or feet.
  • You have nausea or are vomiting.
  • Your BP is higher than your healthcare provider said it should be.
  • You have questions or concerns about your condition or care.


  • Blood pressure medicine may be given to lower your BP. Control of your BP will help prevent problems with your baby's growth or preterm labor.
  • Take your medicine as directed. Contact your healthcare provider if you think your medicine is not helping or if you have side effects. Tell him of her if you are allergic to any medicine. Keep a list of the medicines, vitamins, and herbs you take. Include the amounts, and when and why you take them. Bring the list or the pill bottles to follow-up visits. Carry your medicine list with you in case of an emergency.


  • Check your BP at home. Sit and rest for 5 minutes before you take your BP. Extend your arm and support it on a flat surface. Your arm should be at the same level as your heart. Follow the directions that came with your BP monitor. Take your BP at least twice a day at the same times each day, such as morning and evening. Take at least 2 BP readings each time. Keep a record of your BP readings and bring it to your follow-up visits. Ask your healthcare provider what your BP should be.
    How to take a Blood Pressure
  • Do not smoke or drink alcohol during your pregnancy. Alcohol, nicotine, and other chemicals in cigarettes and cigars, can damage your blood vessels and increase your BP. They can also harm your baby. Ask your healthcare provider for information if you currently smoke and need help to quit. E-cigarettes or smokeless tobacco still contain nicotine. Talk to your healthcare provider before you use these products.
  • Eat healthy foods. Healthy foods can help control your BP. Healthy foods include fruits, vegetables, whole-grain breads, low-fat dairy products, beans, lean meats, and fish. Ask if you need to be on a special diet.
  • Exercise as directed. Exercise can help lower your BP. Ask your healthcare provider how much exercise you need and which exercise is right for you.

Follow up with your healthcare provider as directed:

Go to all prenatal appointments. Your healthcare provider may need to check your blood pressure every 1 to 2 weeks. You will need frequent ultrasounds. An ultrasound checks your baby's growth and makes sure your baby is healthy. Write down your questions so you remember to ask them during your visits.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.