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J Pediatr. 2011 Jun;158(6):1009-1015.e1. doi: 10.1016/j.jpeds.2010.12.057. Epub 2011 Feb 6.

Neutrophil gelatinase-associated lipocalin concentrations predict development of acute kidney injury in neonates and children after cardiopulmonary bypass.

Author information

  • 1Heart Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA. catherine.krawczeski@cchmc.org

Abstract

OBJECTIVES:

To investigate neutrophil gelatinase-associated lipocalin (NGAL) as an early acute kidney injury (AKI) biomarker after neonatal and pediatric cardiopulmonary bypass (CPB).

STUDY DESIGN:

Serum and urine samples were obtained before and at intervals after CPB from 374 patients. AKI was defined as a serum creatinine (S(Cr)) concentration increase from baseline ≥0.3 mg/dL in neonates and ≥50% in children within 48 hours of CPB. Logistic regression was used to assess predictors and clinical outcomes associated with AKI.

RESULTS:

AKI developed in 30% of patients. Plasma and urine NGAL thresholds significantly increased in patients with AKI at 2 hours after CPB and remained elevated at all points, with 2-hour NGAL the earliest, strongest predictor of AKI. In non-neonates, 2-hour plasma and urine NGAL thresholds strongly correlated with length of hospital stay and severity and duration of AKI.

CONCLUSION:

Plasma and urine NGAL thresholds are early predictive biomarkers for AKI and its clinical outcomes after CPB. In neonates, we recommend a 2-hour plasma NGAL threshold of 100 ng/mL and 2-hour urine NGAL threshold of 185 ng/mL for diagnosis of AKI. In non-neonates, recommended AKI thresholds are 50 ng/mL for both 2-hour plasma and urine NGAL.

Copyright © 2011 Mosby, Inc. All rights reserved.

PMID:
21300375
[PubMed - indexed for MEDLINE]
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