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Vitamin E and neonatal bilirubinemia.

A study was designed to determine the effect of vitamin E on bilirubinemia in the preterm infant. Twenty infants with birth weight between 1,000 and 1,500 gm and 20 infants with birth weights between 1,501 and 2,000 gm were studied. Half the infants in each birth weight group received vitamin E administered intramuscularly in a total dose of 50 mg/kg during days 1 to 3 of life; the remaining infants served as controls. The administration of vitamin E produced significantly increased plasma tocopherol concentrations and normal hydrogen peroxide hemolysis tests by the end of the first week of life. Infants with birthweights less than or equal to 1500 gm who received vitamin E demonstrated a significant decrease in serum bilirubin on day 3 of life (6.5 +/- 2.2 vs 8.8 +/- 2.2 mg/dl) as well as a significant decrease in peak serum bilirubin during the first week of life (8.3 +/- 2.2 vs 10.6 +/- 2.6 mg/dl). The duration of phototherapy also was significantly less in the vitamin E-supplemented group (48 +/- 18 vs 107 +/- 31 hours). These differences were less pronounced in infants with birth weights more than 1,500 gm.