Lactate measurements accurately predicts 1-week mortality in emergency department patients with acute kidney injury

Studies on prognostic indicators in patients with acute kidney injury are limited. This study investigated 1-week mortality, laboratory and clinical parameters according to the lactate levels in patients with acute kidney injury. In this cross-sectional study, we compared the lactate levels on admission and follow-up in emergency department with vital findings, laboratory parameters, and 1-week mortality. Data of 3375 patients examined; 2681 patients excluded and 694 patients were included. Median lactate level on admission was 1.6 (1.1–2.5) mmol/L for patients who discharged from emergency department, 2.2 (1.3–3.4) mmol/L for patients admitted to the hospital wards, 3.7 (1.7–7.2) mmol/L for patients admitted to the intensive care unit and 4.4 (2.4–8.0) mmol/L for patients with mortality within 1-week of ED presentation. Mortality was 30.4% in patients with high lactate levels and 8.1% in patients with normal lactate levels on admission. (p