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  • Title: Evaluation of glucose management during therapeutic hypothermia at a Tertiary Academic Medical Center.
    Author: Forni AA, Rocchio MA, Szumita PM, Anger KE, Avery KR, Scirica BM.
    Journal: Resuscitation; 2015 Apr; 89():64-9. PubMed ID: 25600182.
    Abstract:
    STUDY AIM: Alterations in metabolic function during therapeutic hypothermia (TH) decrease responsiveness to insulin and increase the risk of hyperglycemia. Glycemic control is associated with improved outcomes in selected patients; however, glycemic management strategies during TH are not defined. The objective of this analysis was to evaluate the glycemic metrics and IV insulin administration in critically ill patients during the cooling and rewarming phases of TH. METHODS: Data from 37 patients who received at least 6h of therapeutic hypothermia for cardiac arrest between January 2007 and January 2010 were retrospectively evaluated, 14 (37.8%) of whom had diabetes. RESULTS: The mean blood glucose was 9.16±3.22mmol/L and 6.54±2.45mmol/L; p<0.01 during cooling and rewarming, respectively. Twelve (32.4%) patients experienced at least one hypoglycemic event, defined as a blood glucose <4mmol/L. Nineteen (51.4%) patients experienced at least one hyperglycemic event, defined as a blood glucose >11.11mmol/L and 15 (40.5%) patients received IV insulin therapy. Patients on IV insulin had a higher incidence of diabetes (9 vs. 5; p<0.05), higher admission blood glucose (13.89±6.13 vs. 11.03±4.65mmol/L; p=0.11), and a higher incidence of hyperglycemia (14 vs. 2; p<0.01) and hypoglycemia (8 vs. 4; p<0.05). Of the patients on IV insulin, mean insulin requirements during cooling and rewarming were 15.2±16.1 and 7±12.5units/h, respectively. CONCLUSION: TH is commonly associated with hyperglycemia, hypoglycemia, and the use of IV insulin therapy. Further research is needed to determine optimal glycemic management strategies to prevent hyper- and hypoglycemia in patients during the different phases of TH.
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