Medical Conditions

Gestational Hypertension

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If your baby has been diagnosed with or you suspect gestational hypertension, here is what the evidence says.

The short answer

Gestational hypertension is high blood pressure that develops after 20 weeks of pregnancy without protein in the urine or other signs of organ damage. It affects about 6-8% of pregnancies. With regular monitoring, most women with gestational hypertension have healthy pregnancies and deliveries. However, close follow-up is important because it can progress to preeclampsia in some cases.

Key takeaways

  • Gestational hypertension is high blood pressure that develops after 20 weeks of pregnancy without protein in the urine or other signs of organ damage. It affects about 6-8% of pregnancies. With regular monitoring, most women with gestational hypertension have healthy pregnancies and deliveries. However, close follow-up is important because it can progress to preeclampsia in some cases.
  • Usually normal when: A single mildly elevated blood pressure reading that returns to normal on recheck (white coat hypertension is common)
  • Call your doctor if: Your blood pressure is 160/110 or higher on any reading
  • Varies by age — see the age-by-age breakdown below
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By Age

What to expect by age

First trimester

Gestational hypertension does not develop in the first trimester. High blood pressure before 20 weeks is classified as chronic hypertension, which is a different condition with its own management plan. If you have a history of hypertension, your provider may adjust or change your medications to pregnancy-safe options and establish baseline blood pressure readings.

Second trimester

Gestational hypertension may begin to develop in the late second trimester. Blood pressure readings of 140/90 or higher on two separate occasions at least 4 hours apart establish the diagnosis. Your provider will test for protein in your urine and order blood work to rule out preeclampsia. You may be asked to monitor your blood pressure at home and report any elevations.

Third trimester

The third trimester is when gestational hypertension most commonly presents. If your blood pressure remains mildly elevated (below 160/110), management typically includes regular monitoring, activity modification, and possible antihypertensive medication. Your provider will watch for signs of preeclampsia at each visit. Delivery is generally recommended by 37 weeks if hypertension persists, or earlier if it worsens.

Postpartum

Blood pressure typically returns to normal within 12 weeks after delivery. Your provider will continue to monitor your blood pressure postpartum. Some women may need continued blood pressure medication for a short period. Women who had gestational hypertension have an increased lifetime risk of chronic hypertension and cardiovascular disease, so ongoing monitoring is recommended.

What Should You Do?

When to take action

Probably normal when...
  • A single mildly elevated blood pressure reading that returns to normal on recheck (white coat hypertension is common)
  • Blood pressure readings that are consistently within normal range at prenatal visits
  • Mild swelling of feet and ankles without elevated blood pressure (normal in pregnancy)
  • Blood pressure slightly higher than your usual baseline but still below 140/90
Mention at your next visit when...
  • Your home blood pressure readings are consistently 130/80 or higher
  • You are experiencing headaches, swelling of hands or face, or visual changes along with elevated readings
  • You have risk factors such as obesity, first pregnancy, age over 35, or family history of hypertension
Act now when...
  • Your blood pressure is 160/110 or higher on any reading
  • You have severe headache, vision changes, upper abdominal pain, or sudden significant swelling with elevated blood pressure, which may indicate progression to preeclampsia

Doctor Visit Checklist

Bring this checklist to your next pediatrician visit to discuss Gestational Hypertension.

Things to mention

  • Your home blood pressure readings are consistently 130/80 or higher
  • You are experiencing headaches, swelling of hands or face, or visual changes along with elevated readings
  • You have risk factors such as obesity, first pregnancy, age over 35, or family history of hypertension

Observations to share

  • Your home blood pressure readings are consistently 130/80 or higher
  • You are experiencing headaches, swelling of hands or face, or visual changes along with elevated readings
  • You have risk factors such as obesity, first pregnancy, age over 35, or family history of hypertension

Urgent signs to report immediately

  • Your blood pressure is 160/110 or higher on any reading
  • You have severe headache, vision changes, upper abdominal pain, or sudden significant swelling with elevated blood pressure, which may indicate progression to preeclampsia

My notes

From ismybabyalright.com — free, evidence-based baby health guides

Milestone

Month-by-Month Development

Detailed monthly development guides from birth through 24 months.

Guide

When to Call the Doctor

General guide on when to call the pediatrician, visit urgent care, or go to the ER.

Frequently asked questions

Is gestational hypertension normal?
Gestational hypertension is high blood pressure that develops after 20 weeks of pregnancy without protein in the urine or other signs of organ damage. It affects about 6-8% of pregnancies. With regular monitoring, most women with gestational hypertension have healthy pregnancies and deliveries. However, close follow-up is important because it can progress to preeclampsia in some cases.
When should I call the doctor about gestational hypertension?
Your blood pressure is 160/110 or higher on any reading You have severe headache, vision changes, upper abdominal pain, or sudden significant swelling with elevated blood pressure, which may indicate progression to preeclampsia
When is gestational hypertension normal?
A single mildly elevated blood pressure reading that returns to normal on recheck (white coat hypertension is common) Blood pressure readings that are consistently within normal range at prenatal visits Mild swelling of feet and ankles without elevated blood pressure (normal in pregnancy)
What causes gestational hypertension?
Gestational hypertension is high blood pressure that develops after 20 weeks of pregnancy without protein in the urine or other signs of organ damage. It affects about 6-8% of pregnancies. With regular monitoring, most women with gestational hypertension have healthy pregnancies and deliveries. However, close follow-up is important because it can progress to preeclampsia in some cases. Common explanations include: A single mildly elevated blood pressure reading that returns to normal on recheck (white coat hypertension is common). Blood pressure readings that are consistently within normal range at prenatal visits.
What should I mention to my pediatrician about gestational hypertension?
You should mention gestational hypertension at your next visit if: Your home blood pressure readings are consistently 130/80 or higher. You are experiencing headaches, swelling of hands or face, or visual changes along with elevated readings. You have risk factors such as obesity, first pregnancy, age over 35, or family history of hypertension.
Is gestational hypertension normal at First trimester?
Gestational hypertension does not develop in the first trimester. High blood pressure before 20 weeks is classified as chronic hypertension, which is a different condition with its own management plan. If you have a history of hypertension, your provider may adjust or change your medications to pregnancy-safe options and establish baseline blood pressure readings.
Is gestational hypertension normal at Second trimester?
Gestational hypertension may begin to develop in the late second trimester. Blood pressure readings of 140/90 or higher on two separate occasions at least 4 hours apart establish the diagnosis. Your provider will test for protein in your urine and order blood work to rule out preeclampsia. You may be asked to monitor your blood pressure at home and report any elevations.
Should I go to the ER for gestational hypertension?
Seek emergency care if your blood pressure is 160/110 or higher on any reading, or if you have severe headache, vision changes, upper abdominal pain, or sudden significant swelling with elevated blood pressure, which may indicate progression to preeclampsia. When in doubt, call your pediatrician's after-hours line for guidance.
Does gestational hypertension go away on its own?
In many cases, gestational hypertension resolves on its own, especially when a single mildly elevated blood pressure reading that returns to normal on recheck (white coat hypertension is common). By Postpartum, blood pressure typically returns to normal within 12 weeks after delivery. Your provider will continue to monitor your blood pressure postpartum. Some women may need continued blood pressure medication for a short period. Women who had gestational hypertension have an increased lifetime risk of chronic hypertension and cardiovascular disease, so ongoing monitoring is recommended.
ACOGNIHMAYO CLINIC

References

  1. [1]American College of Obstetricians and Gynecologists. Gestational Hypertension and Preeclampsia. ACOG Practice Bulletin No. 222, 2020. ACOG
  2. [2]National Heart, Lung, and Blood Institute. High Blood Pressure in Pregnancy. NIH, 2023. NIH
  3. [3]Mayo Clinic. High blood pressure and pregnancy. Mayo Clinic, 2023. Mayo Clinic

All content follows our editorial policy and is reviewed against published clinical guidelines.

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Related Resources

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Bottom line

Most cases of gestational hypertension are normal. Talk to your pediatrician if your blood pressure is 160/110 or higher on any reading.

Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.

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