Table 2.

Classification of hypertensive disorders in pregnancy

A. Pre-existing hypertension Hypertension either preceding pregnancy or developing before 20 weeks´ gestation, usually persisting for more than 42 days postpartum and may be associated with proteinuria 1. essential 2. secondary

B. Gestational hypertension Hypertension developing after 20 weeks’ gestation and usually resolving within 42 days postpartum 1. Without proteinuria Urinary albumin excretion in a 24 h urine sample < 0.3 g/day or albumin/creatinine in a random spot urine sample < 30 mg/mmol (0.3 mg /mg) 2. With proteinuria Corresponds with the previous definition of pre-eclampsia by 2018 ESC Guidelines for the management of cardiovascular disease during pregnancy Urinary albumin excretion in a 24 h urine sample > 0.3 g/day or albumin/creatinine in a random spot urine sample > 30 mg/mmol (0.3 mg /mg)

C. Pre-existing hypertension + superimposed gestational hypertension with proteinuria Pre-existing hypertension associated with a further increase in BP and protein excretion in a 24 h urine sample > 3 g/day after 20 week’s gestation

D. Antenatally unclassifiable hypertension When BP is first recorded after 20 weeks’ gestation and hypertension is diagnosed, reassessment is necessary at or after 42 days postpartum. If hypertension resolves, then it should be reclassified as gestational hypertension, whereas if hypertension persists, it should be reclassified as pre-existing hypertension