• Colin J Crilly, Amy J Allen, Teresa M Amato, Allison Tiberio, Rifka C Schulman, and Robert A Silverman.
• Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY 11549, United States.
• Am J Emerg Med. 2018 Nov 1; 36 (11): 197519791975-1979.

ObjectiveTo determine whether hyperglycemic patients can be successfully managed in the Emergency Department Observation Unit (EDOU), as determined by the frequency of inpatient admission following their EDOU stay.MethodsThis was a retrospective chart review of patients≥18years presenting to an academic tertiary care ED between May 1, 2014 and May 31, 2016, found to have a glucose≥300mg/dL, and selected for EDOU admission. Patient demographic information, lab results including an HbA1c, disposition, and hospital revisits within 30days of discharge were recorded.ResultsThere were 124 EDOU patients meeting criteria. A total of 98/124 (79.0%) had a history of type 1 or 2 diabetes, and 26/124 (21.0%) were newly diagnosed with diabetes in the EDOU. The mean initial ED serum glucose was 467±126mg/dL. Of the 119 patients with HbA1c analyzed, the mean value was 12.1±2.2% (109±24mmol/mol) and in 112/119 (94.1%) the level was ≥9.0% (75mmol/mol). Overall, 104/124 (83.9%) were discharged from the EDOU, 18/124 (14.5%) were admitted to the inpatient service, and 2/124 (1.6%) left the EDOU against medical advice. A total of 7/124 (5.6%) patients returned to the ED within 30days of discharge with hypoglycemia, hyperglycemia, or diabetic ketoacidosis, 6/7 (85.7%) of whom had been discharged from the EDOU.ConclusionsResults suggest hyperglycemic patients selected by ED physicians can be managed in the EDOU setting. Nearly all patients managed in the EDOU for hyperglycemia had an HbA1c≥9.0%, suggesting unrecognized or poorly controlled chronic diabetes as the basis for hyperglycemia.Copyright © 2018 Elsevier Inc. All rights reserved.

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