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  • 1
    Electronic Resource
    Electronic Resource
    European journal of pediatrics 156 (1997), S. 465-470 
    ISSN: 1432-1076
    Keywords: Key words Retinopathy of prematurity  ;  Iron overload  ;  Oxygen radicals  ;  Transfusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To study the relationship between blood transfusion, iron load and retinopathy of prematurity (ROP), we performed a prospective observational cohort study in a level III neonatal intensive care unit. During a 24-month period, data on the volume of blood transfused during the first 6 weeks of life and on the incidence of ROP were collected in all surviving very low birth weight infants (n = 114 median birth weight␣1130␣g, range 520–1500 g). Associations between these data and values for serum iron, transferrin and ferritin measured at weekly intervals were analysed in a nested case-control design by logistic regression. There was a significant association between the volume of blood transfused and the incidence of ROP. After adjustment for gestational age at birth, duration of oxygen therapy FiO2〉 0.3) and duration of mechanical ventilation, the relative risk of developing ROP was 6.4 (95% CI 1.2–33.4) for infants who had received 16–45 ml/kg, and 12.3 (1.6–92.5) for those who had received more than 45 ml/kg of blood (reference, 0–15 ml/kg). In contrast, there was no independent relationship between ROP and any of the parameters on iron metabolism analysed. Conclusion This study confirms the role of blood transfusions as an independent risk factor for ROP. This relationship, however, does not appear to be mediated via an increased iron load.
    Type of Medium: Electronic Resource
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