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Article type: Research Article
Authors: Gravari, E. | Radmacher, P.G. | Adamkin, D.H. | Myers, S.R.
Affiliations: Department of Pediatrics, Division of Newborn Medicine, University of Louisville, Louisville, KY, USA | Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, USA
Note: [] Corresponding author: Dr. Paula Radmacher, Neonatal Nutrition Research Laboratory 511S. Floyd St. Suite 107, Louisville, KY 40292, USA. Tel.: +1 502 852 5532; E-mail: pgradm01@gwise.louisville.edu
Abstract: Objective: To analyze amino acid profiles and serial blood urea nitrogen values (BUN) in infants <1250 g receiving early amino acid infusion within hours of birth and compare them to previously published values. Design/methods: A retrospective study was conducted on infants <1250 g admitted to the NICU between July 2009 to July 2010. Plasma amino acid (AA) profiles were analyzed by high-performance liquid chromatography and values were compared to previously established reference values. Demographic data, treatment with indomethacin or neoprofen and laboratory results were also collected. Results: A total of 40 neonates were studied. Thirty infants had a single plasma sample and 10 infants were followed with serial samples. AA profiles were consistent with previously published reference values. Serial samples showed little change over 3 days of infusion. Increased BUN did not correlate with abnormal AA profiles or concentration of AA infused in the infants studied. Conclusions: AA profiles on infants <1250 g on exclusive total parenteral nutrition on DOL1-3 demonstrated no evidence of hyperaminoacidemia with the exception of asparagines, threonine and lysine that were below reference levels. A small subset of infants with elevated BUN, demonstrated similar aminograms to those with lower BUN value even when being treated for a symptomatic PDA. Early TPN appears to be well tolerated by extremely preterm infants.
Keywords: Preterm, TPN, amino acids, BUN, chromatography, PDA
DOI: 10.3233/NPM-2012-02750
Journal: Journal of Neonatal-Perinatal Medicine, vol. 5, no. 2, pp. 149-153, 2012
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