AIM: To explore the association of serum bilirubin level and breast milk feeding with retinopathy of prematurity (ROP) in preterm infants. METHODS: We conducted a case-control study to examine the independent and combined effects of serum bilirubin and breast milk feeding on ROP risk in infants <32 weeks gestation or with birth weight <1500 g. Cases (66 infants with ROP) were matched with controls (66 infants without ROP) based on factors known to affect ROP risk. RESULTS: When analysed using the paired t-test, the peak bilirubin levels were lower in ROP cases than in controls (mean 7.2 vs. 7.9 mg/dL; p = 0.045). Using conditional logistic regression, we found a negative association between highest serum bilirubin level and risk of ROP (OR = 0.82 per 1-mg/dL change in bilirubin; p = 0.06). There was no significant association between breast milk feeding and risk of ROP. CONCLUSION: Bilirubin may help to protect preterm infants against ROP.
AIM: To explore the association of serum bilirubin level and breast milk feeding with retinopathy of prematurity (ROP) in preterm infants. METHODS: We conducted a case-control study to examine the independent and combined effects of serum bilirubin and breast milk feeding on ROP risk in infants <32 weeks gestation or with birth weight <1500 g. Cases (66 infants with ROP) were matched with controls (66 infants without ROP) based on factors known to affect ROP risk. RESULTS: When analysed using the paired t-test, the peak bilirubin levels were lower in ROP cases than in controls (mean 7.2 vs. 7.9 mg/dL; p = 0.045). Using conditional logistic regression, we found a negative association between highest serum bilirubin level and risk of ROP (OR = 0.82 per 1-mg/dL change in bilirubin; p = 0.06). There was no significant association between breast milk feeding and risk of ROP. CONCLUSION:Bilirubin may help to protect preterm infants against ROP.
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