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  • Title: Intrauterine growth restriction impacts tolerance to total parenteral nutrition in extremely low birth weight infants.
    Author: Baserga MC, Sola A.
    Journal: J Perinatol; 2004 Aug; 24(8):476-81. PubMed ID: 15141267.
    Abstract:
    BACKGROUND: Hepatobiliary dysfunction is well recognized as a complication of long-term total parenteral nutrition (TPN). Because intrauterine growth restriction (IUGR) alters a number of metabolic and physiologic variables in the fetus that probably affect the hepatocyte function and tolerance to feedings in the IUGR extremely low birth weight (ELBW), we hypothesized that this group of babies would have an increased incidence of TPN-associated cholestasis and chronic liver failure. METHODS: We performed a review of all ELBW infants (birth weight <1000 g) that received TPN for >7 days. RESULTS: Among 1768 infants admitted to the neonatal intensive care unit there were 103 ELBW who received TPN >7 days, 38 (37%) of them developed TPN cholestasis. Among 69 appropriate for gestational age (AGA)-ELBW infants, 19 (27%) developed cholestasis compared to 19/34 small for gestational age (SGA)-ELBW infants (56%) (p<0.0009). Maximum direct bilirubin values and days on TPN were similar in both groups. SGA-ELBW infants had an increased incidence and earlier onset of cholestasis when compared to AGA-ELBW patients. Liver biopsies and/or autopsies of infants that developed liver failure (four AGA/four SGA) showed extensive sinusoidal/portal fibrosis compatible with "TPN lesion". In the other 30 cases, liver function eventually returned to normal after TPN discontinuation. CONCLUSIONS: When compared, SGA-ELBW infants who received TPN >7 days, despite being more mature than AGA-ELBW infants, have an increased risk for TPN cholestasis and developed this complication earlier in life. However, the incidence of chronic liver failure was not different in these two groups.
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