High Blood Pressure During Pregnancy: What Every Expectant Mother Should Know

High blood pressure during pregnancy is one of the most common and most serious complications that expectant mothers face. It affects approximately 1 in every 10 pregnancies and is a leading cause of preterm birth, maternal hospitalization, and serious outcomes for both mother and baby when not properly managed.

The good news: with appropriate prenatal care, monitoring, and timely intervention, most women with pregnancy-related hypertension go on to have healthy outcomes.

Here’s what every expectant mother in the Memphis area should know.

Types of high blood pressure in pregnancy

Not all pregnancy-related hypertension is the same. Understanding the distinctions matters because they carry different risks and require different management.

Chronic hypertension: High blood pressure that existed before pregnancy or is diagnosed before 20 weeks. Women with chronic hypertension need careful monitoring throughout pregnancy because their baseline risk of complications is higher.

Gestational hypertension: High blood pressure that develops after 20 weeks of pregnancy, without other signs of a more serious condition. It typically resolves after delivery. Some women with gestational hypertension go on to develop preeclampsia.

Preeclampsia: A more serious condition characterized by high blood pressure plus signs of organ involvement, most commonly protein in the urine, but also abnormal liver enzymes, low platelet count, or kidney changes. It develops after 20 weeks (or rarely in the postpartum period) and requires close medical management.

HELLP syndrome: A severe variant of preeclampsia involving Hemolysis (red blood cell breakdown), Elevated Liver enzymes, and Low Platelets. This is a medical emergency.

Eclampsia: Preeclampsia that progresses to seizures. This is the most serious complication and requires emergency care.

Symptoms that are warning signs

Blood pressure itself causes no symptoms in most cases, which is why prenatal appointments measure it at every visit. But preeclampsia can produce warning signs that demand immediate attention:

Seek emergency care immediately if you experience:

• Severe headache that won’t go away with rest or over-the-counter medication
• Visual disturbances, blurred vision, flashing lights, blind spots
• Upper abdominal pain, especially under the right ribs
• Sudden swelling of the face, hands, or eyes (rapid puffiness, not just normal foot and ankle swelling)
• Nausea and vomiting in the second half of pregnancy
• Decreased fetal movement combined with any of the above
• Sudden weight gain of more than 2 pounds in a week (suggesting fluid retention)
• Difficulty breathing

These symptoms, particularly the headache, visual changes, and upper abdominal pain, are the classic warning signs of severe preeclampsia. Don’t wait for your next scheduled appointment. Go to labor and delivery or call your provider immediately.

Normal blood pressure vs high blood pressure in pregnancy

Blood pressure naturally decreases somewhat in the first and second trimesters due to hormonal changes, then rises in the third trimester as blood volume increases.

High blood pressure in pregnancy is defined as a reading of 140/90 mmHg or higher, measured on two occasions at least 4 hours apart. Severe range blood pressure is 160/110 mmHg or higher this requires urgent evaluation and usually treatment.

Risk factors for pregnancy hypertension and preeclampsia

You’re at higher risk if you:

• Are pregnant for the first time
• Are carrying twins, triplets, or more
• Have had preeclampsia in a previous pregnancy
• Have chronic hypertension, diabetes, kidney disease, or lupus
• Are over 35 or a teenager
• Are obese (BMI over 30)
• Have a family history of preeclampsia
• Conceived through IVF or other assisted reproductive technology

Women with multiple risk factors may be advised to start low-dose aspirin early in pregnancy as prevention, current guidelines recommend this for women at moderate to high risk of preeclampsia, starting between 12 and 28 weeks (ideally before 16 weeks).

How hypertension in pregnancy is managed

Monitoring: Blood pressure is checked at every prenatal visit. If elevated readings occur, more frequent monitoring including home blood pressure checks is typically recommended. Lab work to monitor kidney and liver function is ordered regularly.

Medication: Not all hypertension in pregnancy requires medication. Mild to moderate gestational hypertension is often managed with monitoring alone. When medication is needed, specific blood pressure medications that are safe in pregnancy are used, some commonly used antihypertensives are not safe and must be avoided.

Activity and lifestyle: Your provider will advise on activity levels. For some women with elevated blood pressure, reduced activity or bed rest is recommended. For others, moderate activity continues to be encouraged.

Delivery timing: For women with preeclampsia, delivery is the only cure. The timing depends on how severe the condition is and how far along the pregnancy is. Mild cases may be managed to 37 weeks; severe cases may require earlier delivery.

Postpartum monitoring: Blood pressure concerns don’t always resolve immediately after delivery. Preeclampsia can actually develop or worsen in the first days after birth. If you’ve had hypertension during pregnancy, your blood pressure will be monitored closely postpartum, and you should know the warning signs to watch for at home.

Why consistent prenatal care makes the difference

The outcomes of pregnancy hypertension are dramatically better with consistent prenatal care, for a simple reason: the conditions that matter most, elevated blood pressure, protein in the urine, abnormal lab values have no early symptoms. They can only be detected through regular monitoring.

Skipping prenatal appointments, especially in the third trimester, means the window to catch a developing problem and intervene closes.

How Beloved Medical can help

We provide prenatal care at our Cordova, TN clinic, including blood pressure monitoring, routine and targeted lab work, and coordination with specialists when more intensive management is needed. We understand that pregnancy can be an anxious time, and our approach is to give you clear, honest information at every step.

If you’re pregnant or planning a pregnancy and you have hypertension, diabetes, or other conditions that affect risk, we’d encourage you to come in early so we can support you from the start.

To schedule a prenatal visit:

• Call (901) 249-0847
• Or book an appointment online

We accept most major insurance plans. Same-day appointments available when needed.

This blog post is for informational purposes only and does not replace professional medical advice. If you are experiencing a pregnancy emergency or any of the severe symptoms described above, call 911 or go to your nearest emergency room immediately.