Complications of Gestational Hypertension

High blood pressure can reduce healthy blood flow through the placenta, which may affect fetal growth or wellbeing. It can also develop into pre-eclampsia, where organs such as the kidneys, liver, or brain become affected. Serious complications can include seizures, stroke, placental separation, or the need for an earlier birth. Some people have no warning symptoms, so blood pressure checks and urine tests remain useful even when you feel well.

Your maternity team may also follow the baby's growth, movement, and heart rate. The plan depends on blood pressure readings, symptoms, blood-test results, gestational age, and the baby's condition.

Attend every antenatal appointment and take prescribed medicine exactly as directed. Keep a record of home readings if your clinician has asked you to monitor them, but do not change treatment based on one reading without advice. Ask about blood tests, urine protein checks, fetal monitoring, and plans for birth. Antenatal care can bring these checks together through an [Antenatal Care Package](/treatments/pregnancy-and-birth-care/antenatal-care-package/).

Contact maternity services urgently for a severe or persistent headache, vision changes, pain beneath the ribs, sudden swelling of the face or hands, shortness of breath, chest pain, confusion, a seizure, vaginal bleeding, or noticeably reduced fetal movement. These symptoms can signal pre-eclampsia or another emergency and should not wait for the next appointment.

Ask what your readings mean, how often you need review, which symptoms require hospital care, whether medicines are needed, how the baby's growth will be checked, and how the team will decide when birth is safest.