OP 35 Incidence of pre-eclampsia in the UK in 2016–17

Abstract

Introduction Accurate contemporaneous data on the incidence of pre-eclampsia in high-income settings are sparse and often limited by coding inaccuracies. Recent work has reported the incidence of pre-eclampsia in the US (1980–2010) to be 3.4% (Ananth et al., BMJ 2013). Objectives To obtain data on the incidence of pre-eclampsia. Materials and methods An audit was undertaken in 16 NHS sites around England and Wales, participating in the PHOENIX study (www.isrctn.com/ISRCTN01879376). Data collection was designed to capture the incidence and duration of care for women diagnosed with pre-eclampsia across the gestational ranges. Data were expressed as a percentage of deliveries for that unit for the time period of data collection. Results The incidence of pre-eclampsia is shown in Fig. 1 below. The mean diagnosis to delivery interval was 11.6 (range 0.0–36.3) days in women presenting prior to 34 weeks gestation, 7.6 (1.3–32.7) days in women between 34 and 37 weeks gestation and 2.6 days (0.0–10.7) in those after 37 weeks gestation. Conclusion The overall incidence of preeclampsia was found to be 1.92% of deliveries, lower than previously described; the reasons behind the lower incidence are unclear. These data have important implications for planning future research studies. Download : Download high-res image (283KB) Download : Download full-size image