High blood pressure before or during pregnancy can lead to serious health problems. These conditions, known as hypertensive disorders of pregnancy, or HDP, include chronic hypertension, gestational hypertension, and preeclampsia.
Chronic hypertension refers to high blood pressure that some women may develop before pregnancy or if blood pressure is elevated before 20 weeks of pregnancy. Gestational hypertension and preeclampsia could happen after 20 weeks of pregnancy. The main difference is that preeclampsia usually includes an increased protein in the urine, and if left untreated, may cause strokes, seizures, and damage to your organs. Expectant mothers with preeclampsia are four times as likely to develop peripartum or postpartum cardiomyopathy.
These conditions, in which the mother’s heart becomes enlarged and weakened in late pregnancy, are harmful to the baby, too. They could affect growth or result in low birth weight or stillbirth. Many complications can also lead to premature births, cesarean delivery, and preterm birth.