Serum Neutrophil Gelatinase-associated Lipocalin Measured at Admission to Predict Mortality in Sepsis-associated Acute Kidney Injury of Vietnamese Critically Ill Patients

Abstract

To evaluate incidence of sepsis-associated acute kidney injury (SA-AKI) in the AKI Intensive Care Unit (ICU) patients and predictive value of Neutrophil Gelatinase-Associated Lipocalin (NGAL) measured at the admission in mortality of SA-AKI and non SA-AKI. A study of 101 consecutive adult patients admitted to the Intensive Care Unit (ICU) diagnosed as AKI in which there were 60 patients with SA-AKI. Acute kidney injury was defined based on Acute Kidney Injury Network (AKIN) criteria. Serum NGAL was measured using the BioVendor Human Lipocalin-2/NGAL ELISA with blood sample taken at admission. Incidence of septic acute kidney injury was 59.4%, incidence of death patients reached 20.0%. Mean concentration of serum NGAL in death group was 633.56 ng/ml, higher significantly than that of survival patients (328.84 ng/ml), p<0.005. Serum NGAL in non SA-AKI patients showed a better prognostic value to predict hospital mortality than that in SA-AKI patients (AUC: 0.894 and 0,807 respectively; p < 0.005) In SA-AKI patients, serum NGAL and mortality rate increased along with the stage of AKI. Serum NGAL, measuring at admission time, was a good prognostic biomarker of mortality in both SA-AKI and non SA-AKI patients.