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Prospective assessment of neurodevelopment in children following a pregnancy complicated by severe pre-eclampsia

C. Warshafsky,J. Pudwell,M. Walker,S. Wen,Graeme N. Smith

Published 2016 in BMJ Open

ABSTRACT

Objective To prospectively examine whether children of women with a pregnancy affected by severe pre-eclampsia (PE), compared to children of women without a PE-affected pregnancy, have differences in neurodevelopmental performance up to 5 years of age. Design Prospective cohort study. Setting Tertiary care centre. Participants Women were recruited following a PE-affected pregnancy. After each PE participant was recruited, the next normotensive woman without a prior history of PE and matched by parity, maternal age and race was invited to participate. Women with a history of chronic hypertension, diabetes or renal disease were excluded. Total enrolment included 129 PE-affected and 140 normotensive mothers. Outcome measures The primary outcome measure was failure of the Ages and Stages Questionnaire (ASQ). The ASQ was completed yearly, until age 5. Results A significant difference was found in the proportion of ASQ categories failed in year 3 (p<0.05), and this approached significance in years 1 and 4 (p<0.10 and p<0.15, respectively). At year 1, the number of ASQ categories failed was significantly greater among children born to PE mothers. A subgroup analysis revealed that a significant proportion of PE children born preterm (<37 weeks) failed the ASQ in years 3 and 4 (p<0.05), and when failed, those who were preterm failed significantly more categories (p<0.05). A trend towards increased failure in the gross motor category was found. There was a significant positive correlation between maternal lifetime CVD risk score and number of ASQ categories failed at years 1 and 3 (p<0.05). Conclusions Severe PE is associated with other adverse pregnancy outcomes, including intrauterine growth restriction and preterm birth, all of which are associated with increased neurodevelopment delays. Thus, PE indicates a need for early screening and intervention at the neurodevelopmental level to improve children's long-term health, with larger studies required to tease out contributing factors.

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