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The effect of red blood cell transfusion on intermittent hypoxemia in ELBW infants
E G Abu Jawdeh1, R J Martin1, T E Dick2
1Division of Neonatology, Department of Pediatrics, Rainbow Babies and Children's Hospital, Case Western Reserve University, Cleveland, OH, USA.
Insights
Red blood cell (RBC) transfusions improve oxygenation in extremely low birth weight (ELBW) infants, but the benefits for intermittent hypoxemia (IH) are age-dependent. Improvement is observed beyond the first week of life, aiding clinical decisions.
Area of Science:
- Neonatology
- Pediatric Critical Care
- Hematology
Background:
- Extremely low birth weight (ELBW) infants often experience intermittent hypoxemia (IH).
- Red blood cell (RBC) transfusions are a common intervention, but their impact on IH in ELBW infants requires age-specific evaluation.
- Understanding the timing of transfusion benefits is crucial for optimizing care.
Purpose of the Study:
- To determine if the effect of RBC transfusions on IH in ELBW infants varies with postnatal age.
- To analyze IH characteristics before and after RBC transfusions across different developmental epochs.
Main Methods:
- Continuous oxygen saturation monitoring in 130 ELBW infants for 8 weeks.
- Comparison of IH events (SpO2 ≤80% for ≥4s and ≤3min) 24 hours before and 24-48 hours after RBC transfusions.
- Analysis across three postnatal age periods: 1-7 days, 8-28 days, and >28 days.
Main Results:
- No significant change in IH frequency or severity was observed in the first week of life (Epoch 1) post-transfusion.
- A significant decrease in IH frequency and severity occurred 24 hours after transfusion in infants older than 7 days (Epochs 2 and 3), persisting for 48 hours.
- Reduced time spent with SpO2 ≤80% was noted for 24 hours post-transfusion in Epochs 1 and 3, and 48 hours in Epoch 3.
Conclusions:
- The beneficial effects of RBC transfusions on IH in ELBW infants are age-dependent, emerging after the first week of life.
- These findings provide valuable insights for clinicians regarding the timing and expected outcomes of RBC transfusions for improving oxygenation in preterm infants.
- Postnatal age is a critical factor influencing the efficacy of RBC transfusions in managing IH.
Objective:
To test the hypothesis that the effect of red blood cell (RBC) transfusion on intermittent hypoxemia (IH) in extremely low birth weight (ELBW) infants is dependent on postnatal age.
Study Design:
Oxygen saturation of 130 ELBW infants, who required transfusion, was monitored continuously for the first 8 weeks of life. We compared the characteristics of IH (SpO2⩽80% for ⩾4 s and ⩽3 min), 24 h before and both 24 h and 24 to 48 h after each RBC transfusion at three distinct time periods: Epoch 1, 1 to 7 days; Epoch 2, 8 to 28 days; and Epoch 3, >28 days.
Result:
In Epoch 1, the frequency and severity of IH events were not significantly different before and after transfusion. In both Epochs 2 and 3 there was a decrease in IH frequency and severity 24 h after RBC transfusion that persisted for 48 h. In addition, there was a decrease in the overall time spent with SpO2 ⩽80% which persisted for 24 h after transfusion in Epochs 1 and 3, and for 48 h in Epoch 3.
Conclusion:
The benefit of RBC transfusion on IH is age dependent as improvement in the frequency and severity of IH after transfusion only occurs beyond the first week of life. These observations will aid clinician's decision making by clarifying the benefit of RBC transfusions on patterns of oxygenation in preterm infants.
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