Metabolic syndrome and the risk for recurrent pre‐eclampsia: a retrospective cohort study

OBJECTIVE: To compare the prevalence of recurrent pre-eclampsia between women who have and do not have metabolic syndrome when non-pregnant. DESIGN: Retrospective cohort study. SETTING: Three tertiary referral hospitals in the Netherlands. POPULATION: Formerly pre-eclamptic women. METHODS: The presence or absence of metabolic syndrome was assessed in 480 women at least 6 months after their first pre-eclamptic pregnancy using World Health Organization criteria. We compared the prevalence of recurrent pre-eclampsia in the subsequent pregnancy, calculating odds ratios (OR), adjusted for confounders. MAIN OUTCOME MEASURE: Recurrence of pre-eclampsia in the subsequent pregnancy. RESULTS: Subsequent pregnancy outcome data were available for 197 women. Forty women had metabolic syndrome after previous pregnancy (20%). The prevalence of recurrent pre-eclampsia was 18/40 (45%) in women with metabolic syndrome versus 27/157 (17%) in women without metabolic syndrome; OR 3.94 (95% confidence interval [CI] 1.86-8.33, adjusted OR 3.77 (95% CI 1.61-8.81). The risk of recurrent pre-eclampsia increased with each extra component of the metabolic syndrome from 11.8% for absent components up to 43.9% for three or more (P for trend < 0.001). CONCLUSIONS: Interpregnancy metabolic syndrome predisposes to recurrent pre-eclampsia.