The Effects of Preeclampsia on Perinatal Risks and Infant Temperaments Among Mothers With Antenatal Depression.

Importance: Preeclampsia and depression are two most prevalent disorders known to affect pregnant women and unborn infant. However, few studies have prospectively examined the adverse influence of the in-utero exposures to the two disorders on the optimal development in their offspring, including mortality, adverse birth outcomes, and infant temperament styles.

Objectives: (1) To examine whether exposures to preeclampsia and antenatal depression were associated with developmental indices of offspring at birth and temperament at 3 months; and (2) To evaluate how preeclampsia and antenatal depression associated with offspring temperamental style.

Design: Prospective cohort study with regular assessment of mother's blood pressure at each prenatal visit: offspring were followed till 3 months.

Setting: Two prenatal clinics, New York City, USA.

Participants: A cohort of 233 pregnant women was followed throughout pregnancy. Of those, 141 provided ratings of infant temperament at three months.

Exposures: Diagnostic outcome of maternal depression by clinical interviewers blind to preeclampsia status, were ascertained using the Structured Clinical Interview for DSM-IV Axis I Disorders. The development of preeclampsia, defined by the onset of hypertension (> 140/90 mm HG) after 20 weeks' gestation, accompanied by 300 mg of protein, monitored via electronic medical records.

Main Outcome Measures: Birth outcomes were assessed via standardized ratings at delivery. Infant temperament was reported by the mother at three months, using 91-item IBQ-R (Infant Behavioral Questionnaire-Revised).

Results: Preeclampsia was associated with an over 5-fold increased risk for fetal/infant mortality, a 3- to 7-fold increased risk for poorer birth outcomes, and flatter affect and distress in infants. Furthermore, infants born to preeclamptic mothers with co-occurring depression displayed lower levels of smile/laughter, high-intensity pleasure seeking behavior, perceptual sensitivity, and approach behavior.

Conclusion: Preeclampsia was associated with a few difficult temperament styles in the first three months after birth. Moreover, its negative impact was amplified by mother's antenatal depression. Our findings regarding additive risk for negative infant outcomes in babies exposed to preeclampsia and antenatal depression suggests that the development of early detection programs to identify and monitor women who are at heightened risk for these conditions can potentially have a positive influence on long-term infant neurobehavioral development.