Neutrophile Gelatinase Associated Lipocalin Evaluation in Septic Acute Kidney Injury

Acute Kidney Failure

septic shock, medical intensive care

Acute kidney injury (AKI) is a major organ failure in septic shock. Current medical tests (serum creatinine and urea) cannot identify AKI until approximately 48 hours after it occurs. Neutrophil gelatinase-associated lipocalin (NGAL) may be able to predict ischemic AKI more effectively and faster than serum creatinine and urea levels. The purpose of this study is to take a blood sample from patients at admission and then at 24 and 48 hours after to test their plasma for NGAL and compare the NGAL levels to their creatinine and urea levels. The investigators hypothesize that NGAL is an earlier marker to classify the kidney failure as acute tubular necrosis or pre-renal azotemia than creatinine and urea.

Primary Outcome Measures: To correlate elevated serum NGAL with the diagnosis of intrinsic acute kidney injury in septic shock Secondary Outcome Measures : To compare serum NGAL with serum creatinine, serum urea and urine output in septic AKI Death within the intensive care unit Death from all causes at 28 days after inclusion

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