Comparison of glycemic and surgical outcomes after change in glycemic targets in cardiac surgery patients

Irena Mulla, Kathleen Schmidt, John Cashy, Amisha Wallia, Adin Cristian Andrei, Diana Johnson Oakes, Grazia Aleppo, Carrie Li, Kathleen L. Grady, Edwin McGee, Mark E. Molitch*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


OBJECTIVE: To compare perioperative glycemic and long-term surgical outcomes in patients undergoing cardiac surgery before and after the recommended 2009 changes in inpatient glycemic targets. RESEARCH DESIGN AND METHODS: We performed a retrospective review of patients who underwent cardiac surgery between 4 September 2007 and 30 April 2011. Comparison was made of blood glucose (BG) outcomes 3 days after surgery, and 30-day cardiac outcomes before and after a change in insulin protocol that took place on 1 September 2009, which consisted of raising the glycemic targets during intravenous insulin infusions from 80-110 mg/dL (80-110 group) to 110-140 mg/dL (110-140 group). RESULTS: When compared with the 80-110 group (n = 667), the 110-140 group (n = 658) had higher mean postoperative BG levels during the intravenous insulin infusion (141 ± 15 vs. 121 ± 15 mg/dL, P < 0.001) and the subcutaneous insulin period (134 ± 24 vs. 130 ± 23 mg/dL, P < 0.001), and for 3 days post operatively (141 ± 17 vs. 127 ± 15 mg/dL, P < 0.001). Fewer patients in the 110-140 mg/dL group experienced moderate hypoglycemia (BG <70 mg/dL) (177 vs. 73, P = 0.04). Severe hypoglycemia (BG <40 mg/dL) occurred in only one patient in the 80-110 group and three patients in the 110-140 group. There were no significant differences in mortality or surgical complication rates (with the exception of reintubation) between the groups. CONCLUSIONS: The higher glycemic target of 110-140 mg/dL resulted in similar mean glucose values, with significantly less hypoglycemia and no significant differences in mortality/morbidity compared with the more strict target of 80-110 mg/dL.

Original languageEnglish (US)
Pages (from-to)2960-2965
Number of pages6
JournalDiabetes care
Issue number11
StatePublished - Nov 1 2014

ASJC Scopus subject areas

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism
  • Advanced and Specialized Nursing


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