The oxygen paradox in retinopathy of prematurity: could fetal hemoglobin be the key?
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By
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Marcus T. A. Jackson
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Ronny Amamoo
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Menaka C. Thounaojam
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Pamela M. Martin
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Ravirajsinh N. Jadeja
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June 2, 2026
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Clinical Scorecard: The Role of Fetal Hemoglobin in the Oxygen Paradox of Retinopathy of Prematurity
At a Glance
| Category | Detail |
|---|
| Condition | Retinopathy of Prematurity (ROP) |
| Key Mechanisms | Postnatal decline in fetal hemoglobin (HbF) associated with increased ROP risk; transfusions from adult donors accelerate HbF replacement with adult hemoglobin (HbA). |
| Target Population | Preterm infants, particularly those between 31 and 34 weeks postmenstrual age. |
| Care Setting | Neonatal intensive care units. |
Key Highlights
- Lower HbF levels correlate with increased incidence and severity of ROP.
- Red blood cell transfusions from adult donors accelerate HbF decline.
- HbF's higher oxygen affinity may protect against hyperoxic injury in the retina.
- Transfusion practices significantly influence ROP risk.
- HbF levels can serve as predictive biomarkers for ROP risk.
Guideline-Based Recommendations
Diagnosis
- Monitor HbF levels in preterm infants to assess ROP risk.
Management
- Optimize transfusion practices to minimize HbF decline.
Monitoring & Follow-up
- Routine HbF monitoring as part of ROP preventive strategies.
Risks
- Increased risk of ROP associated with early and repeated transfusions.
Patient & Prescribing Data
Preterm infants, particularly those at risk for ROP.
Selective use of cord blood products and HbF-informed oxygen titration may mitigate ROP risk.
Clinical Best Practices
- Implement HbF stewardship to guide transfusion and oxygen management.
- Consider timing and frequency of transfusions to reduce ROP risk.
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