Ultrasound for pre-eclampsia

Pre-eclampsia is a condition affecting the pregnant person's blood pressure and sometimes organ function, so ultrasound is one part of the assessment. A scan can measure the baby's growth, check amniotic fluid, observe movement and breathing, and examine blood flow through the placenta and umbilical cord using Doppler techniques. These findings help the maternity team understand how the placenta is supporting the baby and whether monitoring should be closer. A reassuring scan does not replace blood-pressure readings, urine checks or blood tests.

You may be asked to attend repeat scans if growth or placental blood flow needs watching. The scan is usually performed over the abdomen with gel and a probe; the clinician may explain measurements during or after the appointment. Bring your questions and maternity records, and follow instructions about other monitoring such as fetal heart assessment. The care plan may include antenatal review, hospital observation or discussion of induction or Caesarean Section if the combined findings suggest birth is safer than continuing pregnancy.

Seek urgent maternity care for severe headache, visual changes, severe pain beneath the ribs, sudden breathlessness, chest pain, confusion, seizure, vaginal bleeding or reduced fetal movement. An upcoming ultrasound is not a reason to delay assessment. Symptoms can matter even when a previous scan was normal, because maternal blood pressure and organ function can change between appointments.

Ask what the scan is checking, whether growth or blood-flow measurements have changed, when the next assessment is due, and how the result fits with your blood pressure, urine and blood tests. Confirm who to contact if movements reduce or symptoms appear before the next appointment.