Reducing glycemic variability in intensive care unit patients: A new therapeutic target?

Moritoki Egi, Rinaldo Bellomo

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38 Citations (Scopus)


Acute hyperglycemia is common in critically ill patients. Strict control of blood glucose (BG) concentration has been considered important because hyperglycemia is associated independently with increased intensive care unit mortality. After intensive insulin therapy was reported to reduce mortality in selected surgical critically ill patients, lowering of BG levels was recommended as a means of improving patient outcomes. However, a large multicenter multination study has found that intensive insulin therapy increased mortality significantly. A difference in variability of BG control may be one possible explanation why the effect of intensive insulin therapy varied from beneficial to harmful. Several studies have confirmed significant associations between variability of BG levels and patient outcomes. Decreasing the variability of the BG concentration may be an important dimension of glucose management. If reducing swings in the BG concentration is a major biologic mechanism behind the putative benefits of glucose control, it may not be necessary to pursue lower glucose levels with their attendant risk of hypoglycemia.

Original languageEnglish
Pages (from-to)1302-1308
Number of pages7
JournalJournal of Diabetes Science and Technology
Issue number6
Publication statusPublished - 1 Jan 2009
Externally publishedYes


  • Critical illness
  • Glucose
  • Glycemia
  • Insulin
  • Variability

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