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Objective Diabetic ketoacidosis and hyperosmolar hyperglycemic state are life-threatening hyperglycemic crises often requiring intensive care unit (ICU) management. Treatment includes intravenous (IV) insulin with a transition to subcutaneous (SC) insulin upon resolution. Hypoglycemia is a common complication associated with treatment of hyperglycemic crises, but risk factors have not been well established. This study aimed to assess risk factors associated with hypoglycemia during treatment for hyperglycemic crises. Methods This case-control study included ICU patients admitted with hyperglycemic crises at a single Veterans Affairs health system from 1 January 2013 to 31 March 2020. Patients who developed hypoglycemia during insulin treatment were compared with a control group. Odds of hypoglycemia were assessed based on risk factors, including BMI, comorbidities, and type of SC insulin used. Results Of 216 cases of hyperglycemic crises included, hypoglycemia occurred in 61 cases (44 on SC insulin, 11 on IV insulin, and 6 on both). Odds for hypoglycemia were significantly higher for underweight patients (odds ratio [OR] 4.52 [95% CI 1.05–19.55]), type 1 diabetes (OR 4.02 [95% CI 2.09–7.73]), chronic kidney disease (OR 1.94 [95% CI 1.05–3.57]), those resumed on the exact chronic SC insulin regimen following resolution (OR 2.91 [95% CI 1.06–7.95]), and patients who received NPH versus glargine insulin (OR 5.13 [95% CI 1.54–17.06]). No significant differences were seen in the other evaluated variables. Conclusion This study found several factors associated with hypoglycemia during hyperglycemic crises treatment, many of which are not addressed in consensus statement recommendations. These findings may help ICU clinicians prevent complications related to hyperglycemic crisis management and generate hypotheses for future studies.

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IN BRIEF “Quality Improvement Success Stories” are published by the American Diabetes Association in collaboration with the American College of Physicians, Inc., and the National Diabetes Education Program. This series is intended to highlight best practices and strategies from programs and clinics that have successfully improved the quality of care for people with diabetes or related conditions. Each article in the series is reviewed and follows a standard format developed by the editors of Clinical Diabetes. The following article describes an effort to improve the safety of hyperglycemic crisis management at a Veterans Affairs Medical Center by making clinical pharmacy specialists available to the critical care team 24 hours/day.

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