A 31-year-old woman, 34 weeks and 2 days into her first pregnancy, is sent to the day assessment unit from a routine antenatal appointment. She is faintly irritated about it, because she has a deadline and feels essentially fine. The thing she has noticed is that her face and hands have been swelling for about a week and her rings will not come off; the scales show she has put on 3 kg in ten days. The baby is moving normally and everything up to 28 weeks was uneventful.