Table 3.
Severe features associated with pre-eclampsia that warrant consideration of planned early birth before 37 weeks' gestation4,5
| Severe features |
|---|
| Inability to control maternal BP despite using 3 or more classes of antihypertensives in appropriate doses |
| Progressive deterioration in liver function, renal function, haemolysis, or platelet count |
| Maternal pulse oximetry less than 90% on air |
| Ongoing neurological features, such as severe intractable headache, repeated visual scotomata or eclampsia |
| Placental abruption |
| Reversed end-diastolic flow in the umbilical artery Doppler velocimetry, a non-reassuring cardiotocograph or stillbirth |