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Neutrophil Gelatinase-associated Lipocalin Predicts Short-term Outcomes in Decompensated Cirrhosis With Acute Kidney Injury.
BACKGROUND AND AIMS: Acute kidney injury (AKI) increases mortality in cirrhosis. Early identification of the cause of AKI helps in planning appropriate management. We aimed to find whether neutrophil gelatinase-associated lipocalin (NGAL) can be used to differentiate between different types of AKI in cirrhosis and predict short-term outcomes in patients with decompensated cirrhosis and AKI.
METHOD: This was a time-bound study in which consecutive hospitalized patients with cirrhosis and AKI were prospectively recruited and managed as per standard care. Acute on chronic liver failure (ACLF) was diagnosed as per the EASL-CLIF Acute-on-Chronic Liver Failure in Cirrhosis (CANONIC) criteria. Urine NGAL was measured by enzyme-linked immunosorbent assay (ELISA) by Epitope Diagnostics Inc. kit (San Diego, USA.) in all patients on admission, and patients were followed up until hospital discharge or death.
RESULTS: A total of 110 consecutive patients (median [range] age: 44 [28-81] years;87.3%were male; ACLF: 71.8%; acute decompensation 28.2%; Model for end-stage liver disease (MELD) 27 [13-46]; Child-Turcotte-Pugh (CTP) 11 [7-15]) with cirrhosis and AKI were recruited. Alcohol was the most common etiology of cirrhosis(64.5%)). Pre-renal azotemia (PRA) was the most common cause of AKI (n = 56). Urine NGAL was significantly elevated in acute tubular necrosis (ATN) (1747 [6-6141] ng/ml than in hepatorenal syndrome (HRS) (379 [33.5-2320] ng/ml; P < 0.0001) and PRA (167 ng/ml [3.34-660]; P < 0.0001). Sixty-four percent patients with ATN, 27.6% patients with HRS, and none with PRA required dialysis. A total of 79.31% patients with HRS and 76% with ATN died. Urine NGAL was significantly higher in patients who required hemodialysis than in those who did not (1733 [243-6141] ng/ml vs 235 [3.34-2320] ng/ml; P < 0.0001). Both urine NGAL (n = 110) and plasma NGAL (n = 90) were significantly higher in patients who died (urine NGAL: -475 [6-6141] ng/ml vs 247 [3.34-2320] ng/ml; P = 0.002;plasma NGAL-950 [94-4859] ng/ml vs 608 [18-3300)]g/ml; P < 0.001). On multivariate analysis, urine NGAL and INR could predict mortality.
CONCLUSION: NGAL can differentiate between different types of AKI in cirrhosis and predict the need for hemodialysis and mortality in decompensated cirrhosis with AKI.
METHOD: This was a time-bound study in which consecutive hospitalized patients with cirrhosis and AKI were prospectively recruited and managed as per standard care. Acute on chronic liver failure (ACLF) was diagnosed as per the EASL-CLIF Acute-on-Chronic Liver Failure in Cirrhosis (CANONIC) criteria. Urine NGAL was measured by enzyme-linked immunosorbent assay (ELISA) by Epitope Diagnostics Inc. kit (San Diego, USA.) in all patients on admission, and patients were followed up until hospital discharge or death.
RESULTS: A total of 110 consecutive patients (median [range] age: 44 [28-81] years;87.3%were male; ACLF: 71.8%; acute decompensation 28.2%; Model for end-stage liver disease (MELD) 27 [13-46]; Child-Turcotte-Pugh (CTP) 11 [7-15]) with cirrhosis and AKI were recruited. Alcohol was the most common etiology of cirrhosis(64.5%)). Pre-renal azotemia (PRA) was the most common cause of AKI (n = 56). Urine NGAL was significantly elevated in acute tubular necrosis (ATN) (1747 [6-6141] ng/ml than in hepatorenal syndrome (HRS) (379 [33.5-2320] ng/ml; P < 0.0001) and PRA (167 ng/ml [3.34-660]; P < 0.0001). Sixty-four percent patients with ATN, 27.6% patients with HRS, and none with PRA required dialysis. A total of 79.31% patients with HRS and 76% with ATN died. Urine NGAL was significantly higher in patients who required hemodialysis than in those who did not (1733 [243-6141] ng/ml vs 235 [3.34-2320] ng/ml; P < 0.0001). Both urine NGAL (n = 110) and plasma NGAL (n = 90) were significantly higher in patients who died (urine NGAL: -475 [6-6141] ng/ml vs 247 [3.34-2320] ng/ml; P = 0.002;plasma NGAL-950 [94-4859] ng/ml vs 608 [18-3300)]g/ml; P < 0.001). On multivariate analysis, urine NGAL and INR could predict mortality.
CONCLUSION: NGAL can differentiate between different types of AKI in cirrhosis and predict the need for hemodialysis and mortality in decompensated cirrhosis with AKI.
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