What Is a Dangerous Blood Pressure in Pregnancy?

High blood pressure can be dangerous for anyone at any time. However, during pregnancy, elevated blood pressure poses particular dangers to both the fetus and the mother.

Basics

High blood pressure is any reading at or over 140/90 mm Hg. At every doctor's appointment, your physician will monitor your blood pressure. In addition to evaluating these readings, your doctor also will examine the blood pressure readings over time to establish a normal blood pressure for you.

Types

Women who have high blood pressure or who develop it before week 20 of pregnancy are considered to have chronic hypertension. This is likely a permanent condition. Women who develop high blood pressure after week 20 are considered to have pregnancy-induced hypertension.

Diagnosis

Many doctors require a series of high readings over several hours to diagnose high blood pressure in pregnancy.

Risks

According to the March of Dimes, high blood pressure in pregnancy can lead to placental abruption, preterm labor and low birth weight in the fetus. The mom may experience a heart attack, stroke or seizures.

Complications

Preeclampsia is diagnosed when a combination of high blood pressure, protein in the urine and swelling is present. The only cure for preeclampsia is for the baby to be delivered.

References

• March of Dimes