TITLE

Plasma and urine neutrophil gelatinase-associated lipocalin in septic versus non-septic acute kidney injury in critical illness

AUTHOR(S)
Bagshaw, Sean M.; Bennett, Michael; Haase, Michael; Haase-Fielitz, Anja; Egi, Moritoki; Morimatsu, Hiroshi; D'amico, Giuseppe; Goldsmith, Donna; Devarajan, Prasad; Bellomo, Rinaldo
PUB. DATE
March 2010
SOURCE
Intensive Care Medicine;Mar2010, Vol. 36 Issue 3, p452
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Sepsis is the most common trigger for acute kidney injury (AKI) in critically ill patients. We sought to determine whether there are unique patterns to plasma and urine neutrophil gelatinase-associated lipocalin (NGAL) in septic compared with non-septic AKI. Prospective observational study. Two adult ICUs in Melbourne, Australia. Critically ill patients with septic and non-septic AKI. None. Blood and urine specimens collected at enrollment, 12, 24 and 48 h to measure plasma and urine NGAL. Eighty-three patients were enrolled (septic n = 43). Septic AKI patients had more co-morbid disease ( p = 0.005), emergency surgical admissions ( p < 0.001), higher illness severity ( p = 0.008), more organ dysfunction ( p = 0.008) and higher white blood cell counts ( p = 0.01). There were no differences at enrollment between groups in AKI severity. Septic AKI was associated with significantly higher plasma (293 vs. 166 ng/ml) and urine (204 vs. 39 ng/mg creatinine) NGAL at enrollment compared with non-septic AKI ( p < 0.001). Urine NGAL remained higher in septic compared with non-septic AKI at 12 h ( p < 0.001) and 24 h ( p < 0.001). Plasma NGAL showed fair discrimination for AKI progression (area under receiver-operator characteristic curve 0.71) and renal replacement therapy (AuROC 0.78). Although urine NGAL performed less well (AuROC 0.70, 0.70), peak urine NGAL predicted AKI progression better in non-septic AKI (AuROC 0.82). Septic AKI patients have higher detectable plasma and urine NGAL compared with non-septic AKI patients. These differences in NGAL values in septic AKI may have diagnostic and clinical relevance as well as pathogenetic implications.
ACCESSION #
48004570

 

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