Maternal hyperuricemia and adverse neonatal outcomes in normotensive pregnancies: Evidence from a prospective cohort study in Eastern Uganda

PLoS One. 2026 Mar 2;21(3):e0342913. doi: 10.1371/journal.pone.0342913. eCollection 2026.

Abstract

Background: Maternal hyperuricemia is a potential biomarker of adverse pregnancy outcomes, but evidence among normotensive women in low- and middle-income countries is limited. We aimed to assess the association between elevated maternal serum uric acid (SUA) levels and adverse neonatal outcomes.

Methods: We conducted a prospective cohort study at Jinja Regional Referral Hospital, Uganda, from 1st October 2024-1st February 2025, enrolling 352 normotensive women in latent labor. SUA was measured using gestational-age-specific cutoffs, classifying women as hyperuricemic or normouricemic. Outcomes included preterm birth, small-for-gestational-age (SGA) birth, stillbirth, and low Apgar score. Poisson regression with robust standard errors estimated adjusted relative risks (aRR) and 95% confidence intervals.

Results: Adverse neonatal outcomes occurred in 37.5% of participants. Hyperuricemic women had significantly higher composite risk (62.5% vs. 12.5%; aRR = 4.32, 95% CI 2.92-6.39). Hyperuricemia independently predicted preterm birth (aRR = 3.63, 95% CI 1.70-7.72), SGA (aRR = 2.80, 95% CI 1.61-4.86), and stillbirth (aRR = 5.00, 95% CI 1.47-16.99). Maternal age ≥ 40 years, low education, < 4 antenatal visits, previous preterm birth, previous stillbirth, and obesity were also associated with adverse outcomes. Conclusions. Maternal hyperuricemia is a strong predictor of preterm birth, SGA, and stillbirth. Routine SUA screening during antenatal care, combined with closer monitoring of high-risk women, could help improve neonatal outcomes.

MeSH terms

  • Adult
  • Female
  • Humans
  • Hyperuricemia* / blood
  • Hyperuricemia* / complications
  • Hyperuricemia* / epidemiology
  • Infant, Newborn
  • Infant, Small for Gestational Age
  • Pregnancy
  • Pregnancy Complications* / blood
  • Pregnancy Complications* / epidemiology
  • Pregnancy Outcome / epidemiology
  • Premature Birth* / blood
  • Premature Birth* / epidemiology
  • Prospective Studies
  • Risk Factors
  • Stillbirth / epidemiology
  • Uganda / epidemiology
  • Uric Acid / blood
  • Young Adult

Substances

  • Uric Acid