• Brian E Driver, Travis D Olives, Johanna E Bischof, Marcus R Salmen, and James R Miner.
• Department of Emergency Medicine, Hennepin County Medical Center, Minneapolis, MN. Electronic address: briandriver@gmail.com.
• Ann Emerg Med. 2016 Dec 1; 68 (6): 697-705.e3.

Study ObjectiveHyperglycemia is frequently encountered in the emergency department (ED), and there is no consensus on optimal care before discharge. The importance of glucose reduction in the ED is unknown. We seek to determine whether an association exists between discharge glucose and 7-day adverse outcomes.MethodsA cohort design with retrospective chart review was conducted at a high-volume urban ED. Patients were included if any glucose level was greater than or equal to 400 mg/dL and they were discharged from the ED. Generalized estimating equation models were created for the 7-day outcomes with a primary predictor of discharge glucose.ResultsThe cohort consisted of 422 patients with 566 ED encounters. Mean arrival and discharge glucose were 491 mg/dL (SD 82 mg/dL) and 334 mg/dL (SD 101 mg/dL), respectively. In the 7-day follow-up period, 62 (13%) and 36 (7%) patients had a repeat ED visit for hyperglycemia and were hospitalized, respectively. Two patients had diabetic ketoacidosis. After adjustment for arrival glucose, whether a chemistry panel was obtained, amount of intravenous fluids administered, and amount of subcutaneous insulin administered, discharge glucose was not associated with repeat ED visit for hyperglycemia (adjusted odds ratio 0.997; 95% confidence interval 0.993 to 1.001) or hospitalization for any reason (adjusted odds ratio 0.998; 95% confidence interval 0.995 to 1.002).ConclusionED discharge glucose in patients with moderate to severe hyperglycemia was not associated with 7-day outcomes of repeat ED visit for hyperglycemia or hospitalization. Attaining a specific glucose goal before discharge in patients with hyperglycemia may be less important than traditionally thought.Copyright © 2016 American College of Emergency Physicians. Published by Elsevier Inc. All rights reserved.

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