For pregnant patients diagnosed with hypertension, conduct regular fetal ultrasound assessments for growth, amniotic fluid volume, and umbilical artery doppler velocimetry at diagnosis and at specified intervals: every 2 to 4 weeks for gestational hypertension, and at 28, 32, and 36 weeks for chronic hypertension NICE NG133.
Carry out cardiotocography at diagnosis of pre-eclampsia or severe gestational hypertension, and only repeat if clinically indicated NICE NG133.
In women with pre-eclampsia or severe gestational hypertension, perform ultrasound for fetal growth, amniotic fluid assessment, and umbilical artery doppler velocimetry at diagnosis, with subsequent scans every 2 to 4 weeks depending on findings NICE NG133.
Monitor maternal blood pressure hourly during labour in women with hypertension, and every 15 to 30 minutes until blood pressure is less than 160/110 mmHg in cases of severe hypertension NICE NG133.
Assess for symptoms of pre-eclampsia at each antenatal visit, including proteinuria testing via dipstick, and quantify if positive, using albumin:creatinine ratio or protein:creatinine ratio NICE NG133.
Perform repeat biochemical and haematological tests (platelet count, transaminases, serum creatinine) 48-72 hours postpartum or after step-down from critical care, and repeat if abnormal NICE NG133.