Prenatal Psychosocial Stressors and Blood Pressure Across 4 Years Postpartum.

Background: Psychosocial stress is a cardiovascular risk factor; however, little is known about whether prenatal psychosocial stressors influence postpartum cardiovascular health. We aimed to examine the associations of multiple measures of prenatal psychosocial stress on maternal blood pressure (BP) in the first 4 years after birth.

Methods: Among 225 MADRES cohort (Maternal and Developmental Risks From Environmental and Social Stressors) participants, we examined associations of average prenatal Perceived Stress Scale (PSS), Center for Epidemiological Studies Depression (CES-D) scores, and second-trimester neighborhood social cohesion scores on systolic and diastolic BP collected at annual postpartum study visits (1-4 years) using linear mixed-effects models, adjusted for covariates.

Results: Higher prenatal PSS and CES-D scores were associated with greater diastolic BP at 1 year postpartum (0.24 [95% CI, 0.01-0.46] and 0.24 [95% CI, 0.08-0.40] mm Hg per 1-unit higher PSS and CES-D, respectively) and greater systolic BP (0.25 [95% CI, 0.02-0.48] mm Hg per 1-unit higher CES-D). Overall associations of PSS and CES-D with BP were attenuated over the 4-year postpartum period (P<0.05). Stratified analyses suggested larger associations of PSS and CES-D among US-born participants and participants with normotensive pregnancies. While neighborhood social cohesion was not associated with postpartum BP overall, higher neighborhood social cohesion scores were associated with lower BP at 1 year postpartum among participants with normotensive pregnancies and lower systolic BP among foreign-born Hispanic participants.

Conclusions: Higher prenatal perceived stress and depressive symptoms were associated with greater 1-year postpartum BP, whereas neighborhood cohesion was associated with lower 1-year postpartum BP. These results suggest prenatal psychosocial factors may impact cardiovascular health within the first year after birth.