Association between elevated lactate and clinical outcomes in adults with diabetic ketoacidosis.

J Crit Care

Intensive Care Unit, Caboolture Hospital, Queensland, Brisbane, Australia; Intensive Care Unit, The Prince Charles Hospital, Queensland, Brisbane, Australia; Faculty of Medicine, University of Queensland, Brisbane, Australia; Critical Care Division, The George Institute for Global Health, University of New South Wales, Sydney, Australia. Electronic address:

Published: December 2023

Purpose: To assess the occurrence of hyperlactatemia among patients admitted to the intensive care unit (ICU) with diabetic ketoacidosis (DKA), and effect on in-hospital mortality.

Materials And Methods: A retrospective, multicentre, cohort study of adult patients admitted to ICU with a primary diagnosis of DKA in Australia and New Zealand, utilising a pre-existing dataset. The primary exposure variable was lactate, dichotomised into normolactatemia (lactate <2.0 mmol/L) and hyperlactatemia (lactate ≥ 2.0 mmol/L) groups. The primary outcome was in-hospital mortality. Secondary outcomes included ICU and hospital length of stay (LOS), requirement for ventilation, renal replacement therapy (RRT) and inotropes.

Results: The final dataset included 9061 patients. Hyperlactatemia was associated with in-hospital mortality (Odds Ratio [OR] 1.785 (95% CI 1.122-2.841, p = 0.014), hospital LOS (Geometric mean ratio [GMR] 1.063, 95% CI 1.025-1.103, p = 0.001), ICU LOS (GMR 1.057, 95% CI 1.026-1.09. p < 0.001), RRT (OR 2.198, 95% CI 1.449-3.334, p < 0.001) and inotropes (OR 1.578, 95% CI 1.311-1.899, p < 0.001). These associations persisted in Type 2 but not Type 1 diabetics.

Conclusions: Hyperlactatemia in patients admitted to ICU with DKA is associated with higher mortality, longer hospital and ICU LOS, and higher rates of mechanical ventilation, RRT and inotropes.

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Source
http://dx.doi.org/10.1016/j.jcrc.2023.154377DOI Listing

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