To evaluate the effect of bilirubin levels in the first week of life on the frequency of oxidative-stress related morbidity. We included all preterm infants with a gestational age less than 32 weeks. The mean total serum bilirubin of the first week of life was measured and compared between infants with and without oxidative stress related morbidity. A total of 116 preterm infants were included. Univariate analysis showed that mean ± SD TSB levels were statistically significantly lower in infants with chronic lung disease (95 ± 31.4micromole/l vs 119 ± 31micromole/l, p = 0.019), necrotizing enterocolitis (94.4 ± 29micromole/l vs 118 ± 31micromole/l p = 0.044) and patent ductus arteriosus (104 ± 33micromole/l vs 120 ± 30micromole/l p = 0.018). However, when adjusted for gestational age, there were no longer statistically significant differences observed. Elevated bilirubin levels in the first week of life are not protective against the oxidative stress related morbidity in very preterm infants.

3rd School of Medicine Charles University Prague Czech Republic

Department of Paediatrics and Newborn Medicine Coombe Women and Infants University Hospital Dublin Ireland

Institute for the Care of Mother and Child Prague Czech Republic

UCD School of Medicine and Medical Sciences Dublin Ireland

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$a To evaluate the effect of bilirubin levels in the first week of life on the frequency of oxidative-stress related morbidity. We included all preterm infants with a gestational age less than 32 weeks. The mean total serum bilirubin of the first week of life was measured and compared between infants with and without oxidative stress related morbidity. A total of 116 preterm infants were included. Univariate analysis showed that mean ± SD TSB levels were statistically significantly lower in infants with chronic lung disease (95 ± 31.4micromole/l vs 119 ± 31micromole/l, p = 0.019), necrotizing enterocolitis (94.4 ± 29micromole/l vs 118 ± 31micromole/l p = 0.044) and patent ductus arteriosus (104 ± 33micromole/l vs 120 ± 30micromole/l p = 0.018). However, when adjusted for gestational age, there were no longer statistically significant differences observed. Elevated bilirubin levels in the first week of life are not protective against the oxidative stress related morbidity in very preterm infants.

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