Incidence and long-term outcomes of critically ill adult patients with moderate-to-severe diabetic ketoacidosis: retrospective matched cohort study.

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Incidence and long-term outcomes of critically ill adult patients with moderate-to-severe diabetic ketoacidosis: retrospective matched cohort study.

J Crit Care. 2014 Dec;29(6):971-7

Authors: Azevedo LC, Choi H, Simmonds K, Davidow J, Bagshaw SM

Abstract
OBJECTIVE: The objective of this study was to describe the clinical outcomes and treatment intensity of adult intensive care unit (ICU) patients with moderate-to-severe diabetic ketoacidosis (DKA). We aimed also to compare their clinical course with matched non-DKA ICU controls and to identify prognostic factors for mortality and hospital readmission within 1 year.
DESIGN: This is a retrospective matched cohort study.
SETTING: The settings are 2 tertiary teaching hospitals in Edmonton, Canada.
PATIENTS: Patients were adults with moderate-to-severe DKA admitted from January 2002 to December 2009. Control patients were defined as randomly selected age, sex, and Acute Physiology and Chronic Health Evaluation II score-matched nondiabetic ICU patients (1:4.5 matching ratio). Diabetic patients were stratified according to severity of exacerbation.
INTERVENTIONS: None.
MEASUREMENTS AND MAIN RESULTS: From 2002 to 2009, the incidence of DKA per 1000 admissions was 4.59 (95% confidence interval [CI], 3.64-5.71). Severe DKA was associated with higher Acute Physiology and Chronic Health Evaluation II and Sequential Organ Failure Assessment scores in the first 3 days of ICU stay as compared with moderate DKA. Mechanical ventilation was received in 39%, vasopressors in 17%, and renal replacement therapy in 12% of DKA patients, respectively. One-year mortality and readmission rates were 9% and 36%. By logistic regression, death and/or readmission occurring in 1 year was independently associated with insulin use (odds ratio, 4.79; 95% CI, 1.14-20.05) and treatment noncompliance (odds ratio, 3.33; 95% CI, 1.04-10.64). Compared with matched non-DKA patients, those with DKA had lower mortality and were more likely to be discharged home.
CONCLUSIONS: Diabetic ketoacidosis necessitating ICU admission is associated with considerable resource utilization and long-term risk for death. Interventions aimed to improve compliance with therapy may prevent readmissions and improve the long-term outcome.

PMID: 25220529 [PubMed - indexed for MEDLINE]

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