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August 28, 2026Retina

Anemia of Prematurity: Risk Factor for Retinopathy of Prematurity in Later Preterm and Heavier Birth Weight Neonates

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Authors

PMPaul Sheils MSEdSMSonia C. McNamaraSASinan Akosman

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Overview

Retrospective population-based study demonstrates anemia of prematurity increases retinopathy risk in preterm neonates, suggesting eye screening should expand to heavier, later-preterm infants.

Key Points

  • To evaluate whether anemia of prematurity acts as an independent risk factor for retinopathy of prematurity across gestational age and birth weight categories.
  • Analyzed 293,910 preterm neonates (≤36 weeks' gestational age) from the National Inpatient Sample (2016–2021).
  • Conducted multivariable logistic regression restricted to urban teaching hospitals, adjusting for demographics, red blood cell transfusions, oxygen exposure, respiratory distress syndrome, bronchopulmonary dysplasia, mechanical ventilation, and intraventricular hemorrhage.
  • Retinopathy of prematurity occurred in 2.8% of infants and was significantly more prevalent among those with anemia of prematurity compared to those without (82.4% vs. 11.7%, p < 0.001).
  • Anemia of prematurity was independently associated with increased odds of retinopathy across all gestational-age strata (adjusted odds ratios 2.66 to 9.63, all p < 0.01).
  • The strongest associations emerged in later preterm neonates (32–36 weeks) and infants with birth weights ≥1500 g.

Cite This Study

MSEd et al. (2026) studied this question.

synapsesocial.com/papers/6a91466cd15324a1df3a9fa7https://doi.org/10.1097/iae.0000000000004999
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Relationship Between Retinopathy of Prematurity and Anemia and Red Blood Cell Transfusions in Very Premature/Very-Low-Birth-Weight Neonates2026
  2. 2Progress in the study of association between hematological indicators and retinopathy of prematurity (Review)2024 · 4 citations
  3. 3RETINOPATHY OF PREMATURITY IN PREMATURE INFANTS ADMITTED AT NICU2026
  4. 4Prevalence and risk factors for retinopathy of prematurity in preterm infants at a Brazilian tertiary hospital: a cross-sectional study2026
  5. 5Profile of Retinopathy of prematurity in newborns2011