Heart rate variability during pregnancy enhances prediction of postpartum depression and anxiety beyond traditional psychological screening measures.
Postpartum depression (PPD) and anxiety continue to affect maternal well-being, infant development, and long-term family health, making early identification of vulnerable women an important clinical priority. Psychological questionnaires remain widely used for antenatal risk assessment, yet researchers are increasingly investigating whether physiological biomarkers can strengthen prediction accuracy. Heart rate variability (HRV), a marker of autonomic nervous system regulation, has emerged as a potential indicator of emotional resilience and stress adaptation during pregnancy.
This study, led by Allison Eriksson et al., examined whether HRV measurements collected during early and late pregnancy provided additional predictive value for PPD and anxiety symptoms beyond established psychosocial and health-related risk factors. A group of researchers evaluated 91 pregnant women who underwent psychological assessments and HRV recordings during both early and late gestation. HRV measurements were obtained before and after exposure to a mild cognitive-emotional stress task to assess autonomic nervous system responses across pregnancy stages.
Validated self-report questionnaires were used to assess postpartum depressive symptoms along with state and trait anxiety levels after childbirth. Machine learning–based Random Forest models analyzed the predictive contribution of HRV indices alongside conventional antenatal psychosocial variables. Model performance was compared to determine whether physiological markers improved prediction accuracy.
The findings suggested that HRV monitoring during pregnancy may offer clinically useful complementary information for identifying women at risk of PPD and anxiety.
Psychoneuroendocrinology
Exploring early and late pregnancy heart rate variability as incremental predictors of postpartum depression and anxiety symptoms
Allison Eriksson et al.
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