Expert Commentary

In women with late preterm mild hypertensive disorders, does immediate delivery versus expectant management differ in terms of neonatal neurodevelopmental outcomes?

Author and Disclosure Information

Yes. For women with late preterm (34–37 weeks) mild hypertensive disorders in pregnancy, immediate delivery resulted in poorer neurodevelopmental outcomes in offspring at 2 years when compared with expectant management. In this follow-up study of 342 women enrolled in the HYPITAT-II trial, expectant management until clinical deterioration or term is reached maximized childhood outcomes at age 2.


 

References

Zwertbroek EF, Franssen MT, Broekhuijsen K, et al; HYPITAT-II Study Group. Neonatal developmental and behavioral outcomes of immediate delivery versus expectant monitoring of mild hypertensive disorders of pregnancy: 2-year outcomes of the HYPITAT-II trial. Am J Obstet Gynecol. doi:10.1016/j.ajog.2019.03.024.

EXPERT COMMENTARY

In women with mild hypertensive disorders in the preterm period, the maternal benefits of delivery should be weighed against the consequences of preterm birth for the neonate. In a recent study, Zwertbroek and colleagues sought to evaluate the long-term neurodevelopmental effects of this decision on the offspring.

Details of the study

The authors conducted a follow-up study of the randomized, controlled Hypertension and Preeclampsia Intervention Trial At Term II (HYPITAT-II), in which 704 women diagnosed with late preterm (34–37 weeks) hypertensive disorders in pregnancy (gestational hypertension, chronic hypertension, or mild preeclampsia) were randomly assigned to immediate delivery or expectant management.

Expectant management consisted of close monitoring until 37 weeks or until an indication for delivery occurred, whichever came first. Children born to those mothers were eligible for this study (women enrolled during 2011–2015) when they reached 2 years of age; 342 children were included in this analysis. Of note, children from the expectant management group had been delivered at a more advanced gestational age (median, 37.0 vs 36.1 weeks; P<.001) than those in the immediate-delivery group.

Survey tools. Parents completed 2 response surveys, the Ages and Stages Questionnaire (ASQ) and the Child Behavior Checklist (CBCL), between 23 and 26 months’ corrected age. The ASQ is designed to detect developmental delay, while the CBCL assesses behavioral and emotional problems. The primary outcome was an abnormal result on either screen.

Results. Based on 330 returned questionnaires, the authors found more abnormal ASQ scores (45 of 162 [28%] vs 27 of 148 [18%] children; P = .045) in the immediate-delivery group versus the expectant management group, most pronounced in the fine motor domain. They found no difference in the CBCL scores. The authors concluded that immediate delivery for women with late preterm mild hypertensive disorders in pregnancy increases the risk of developmental delay in the children.

Study strengths and limitations

This study is unique as a planned follow-up to a randomized, controlled trial, allowing for 2-year outcomes to be assessed on children of enrolled women with mild hypertensive disorders in the late preterm period. The authors used validated surveys that are known to predict long-term neurodevelopmental outcomes.

Continue to: This work has several limitations...

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