sFlt-1/PlGF ratio use does not reduce hospitalisation duration in suspected preeclampsia: the PRECOG study, a multicentre randomised trial

The aim of the PRECOG study was to evaluate if the use of the sFlt-1/PlGF ratio in patients hospitalized for suspected preeclampsia before 35 weeks could improve patient management and reduce the length of hospitalization. A prospective randomized multicenter interventional open-label study in a hospital population with 2 parallel groups with or without taking into account the sFlt-1/PlGF ratio for the management of patients admitted for suspected pre-eclampsia. 80 patients were included in the study. Characteristics of patients were equally distributed among randomization groups. There was no difference in the primary outcome between the two groups. Hospitalization for more than 24 h was 75% in the group reveal versus 80% in the group conceal (Relative Risk p = 0.59). Groups did not differ in hospitalization duration for different cut-off values such. When stratifying by ratio value, among those with a ratio < 38, 37% were discharged home < 24 h in the conceal group and 47% in the reveal group. There was no difference in the secondary outcomes between the two groups. In this randomized controlled trial in women hospitalized for suspected of preeclampsia, the use of the sFlt-1/PlGF ratio at was not associated with a benefit in terms of duration of hospitalization or in maternal and neonatal outcomes.