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Updated: Jul 4, 2026

Modeling Neonatal Intraventricular Hemorrhage Through Intraventricular Injection of Hemoglobin
Published on: August 25, 2022
Effect of hemoglobin on transfusion and neonatal adaptation in extremely low-birthweight infants
Shigeharu Hosono1, Hideo Mugishima, Tomomi Kitamura
1Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan. hosonos@med.nihon-u.ac.jp
Insights
Higher initial hemoglobin levels in extremely low-birthweight infants reduce the need for blood transfusions and lower mortality risk. This finding highlights the importance of monitoring hemoglobin in neonatal intensive care.
Area of Science:
- Neonatal Medicine
- Pediatric Hematology
Background:
- Extremely low-birthweight (ELBW) infants often require interventions like red blood cell transfusions.
- Initial hemoglobin levels may influence neonatal adaptation and outcomes in ELBW infants.
Purpose of the Study:
- To investigate the impact of initial hemoglobin concentration on red blood cell transfusion needs and neonatal adaptation in ELBW infants.
Main Methods:
- A cohort of 54 ELBW infants was divided into high (hemoglobin ≥15.0 g/dL) and low hemoglobin groups.
- Outcomes analyzed included red blood cell transfusion requirements, mortality, blood pressure, and intraventricular hemorrhage rates.
Main Results:
- The high hemoglobin group showed a significantly lower probability and number of red blood cell transfusions.
- Higher initial hemoglobin was associated with increased blood pressure in the first 24 hours and reduced risk of severe intraventricular hemorrhage.
- Mortality rates were significantly higher in the low hemoglobin group.
Conclusions:
- Elevated hemoglobin at birth is linked to decreased red blood cell transfusion needs in ELBW infants.
- Higher initial hemoglobin may improve blood pressure stability, reduce mortality, and lower the risk of severe intraventricular hemorrhage.
Background:
The aim of the present paper was to investigate the effect of initial hemoglobin level on red blood cell transfusion and neonatal adaptation in extremely low-birthweight (ELBW) infants.
Methods:
Subjects consisted of 54 ELBW infants admitted to level III neonatal intensive care unit between 1995 and 2000, and divided into two groups based on hemoglobin level at birth. High hemoglobin was defined as hemoglobin > or =15.0 g/dL.
Results:
There were no significant differences in gestational age and birthweight between the high hemoglobin group (n = 28) and low hemoglobin group (n = 26). The high hemoglobin group had decreased probability of requiring red blood cell transfusion (P < 0.05) and number of red blood cell transfusions (P < 0.05). Mortality rate in the low hemoglobin group was significantly higher compared with the high hemoglobin group (P = 0.03). In the high hemoglobin group, blood pressures during the first 24 h were significantly higher (P < 0.05) and the risk of intraventricular hemorrhage was significantly lower (P = 0.04) compared with the low hemoglobin group. The predictive variables, initial hemoglobin level (odds ratio 1.93 [decrease by 1 g/dL]) and intraventricular hemorrhage > or =III (odds ratio 21.76 [positive]) were found to be most predictive for death on logistic regression.
Conclusion:
High hemoglobin level at birth is associated with a significantly reduced requirement for red blood cell transfusion and might contribute to stabilization of blood pressure, and thus reduce mortality and the risk of severe intraventricular hemorrhage.
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