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

14 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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