• Guillermo E Umpierrez and P KovatchevBorisBCenter for Diabetes Technology, University of Virginia Health System, Charlottesville, Virginia. Electronic address: boris@virginia.edu..
• Division of Endocrinology, Diabetes, and Metabolism, Emory University School of Medicine, Atlanta, Georgia. Electronic address: GEUMPIE@emory.edu.
• Am. J. Med. Sci. 2018 Dec 1; 356 (6): 518527518-527.

AbstractGlycated hemoglobin A1c (A1C) levels have traditionally been the gold standard for assessing glycemic control and treatment efficacy in patients with type 2 diabetes. However, A1C does not take into account fluctuations in blood glucose levels known as glycemic variability (GV). In recent years, GV has become increasingly clinically relevant, because of a better understanding of the need to reach target A1C while avoiding hypoglycemia. GV relates to both hyperglycemia and hypoglycemia, and has been associated with poorer quality of life. Diabetes treatments targeting multiple pathophysiological mechanisms are most beneficial in controlling A1C and reducing GV. In clinical trials, a number of metrics are used to measure GV, many of which are not well understood in the clinical practice. Until a gold standard metric for GV is established, the variety of measurements available may confound the choice of an optimal treatment for an individual patient.Copyright © 2018. Published by Elsevier Inc.

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