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Published on: June 11, 2012
Effect of early hypoglycaemia on hospitalization outcomes in patients undergoing coronary artery bypass grafting
Xiaojue Li1, Xiaopei Hou1, Heng Zhang2
1Endocrinology Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Insights
Early postoperative hypoglycemia after coronary artery bypass grafting (CABG) is linked to worse outcomes. Avoiding low blood sugar is crucial for patients with and without diabetes to improve hospitalization results.
Area of Science:
- Cardiology
- Endocrinology
- Critical Care Medicine
Background:
- Postoperative hypoglycemia is a potential complication following major cardiac surgery.
- Understanding its impact on hospitalization outcomes is critical for patient management.
Purpose of the Study:
- To investigate the association between early postoperative hypoglycemia and adverse hospitalization outcomes after coronary artery bypass grafting (CABG).
- To assess the impact on major cardiovascular complications and in-hospital mortality.
Main Methods:
- Analysis of data from 9583 patients undergoing CABG in an observational study.
- Hypoglycemia defined as nadir blood glucose <70 mg/dL (3.9 mmol/L).
- One-to-one propensity score matching (PSM) used to create balanced patient pairs for outcome comparison.
Main Results:
- 3.2% of patients experienced hypoglycemia.
- Hypoglycemic patients had significantly higher composite adverse outcomes (12.1% vs 6.0%, P < 0.0001) and longer ICU stays.
- PSM confirmed hypoglycemia independently associated with increased composite outcomes (OR 2.78) and longer ICU stay (OR 1.60).
Conclusions:
- Postoperative hypoglycemia is an independent risk factor for adverse outcomes and prolonged ICU stay post-CABG.
- Hypoglycemia management is essential for both diabetic and non-diabetic patients undergoing CABG.
Objective:
To investigate the effect of early postoperative hypoglycaemia on hospitalization outcomes including major cardiovascular complications and in-hospital mortality among patients undergoing coronary artery bypass grafting (CABG).
Methods:
Data from an observational study of 9583 patients in the intensive care unit (ICU) who underwent CABG were analyzed. Hypoglycaemia was defined as a nadir blood glucose level <70 mg/dL (3.9 mmol/L). One-to-one propensity score matching (PSM) was used to identify 251-balanced pairs of patients to compare outcomes.
Results:
A total of 306 (3.2%) patients experienced hypoglycaemia, of whom, 133 had diabetes, 173 hadn't diabetes. Patients who were hypoglycaemia had higher incidences of compositeoutcomes than those without hypoglycaemia (12.1% versus 6.0%, P < 0.0001). Postoperative length of ICU stay was longer in patients with hypoglycaemia [2.8 (0.8-21.0) versus 2.0 (0.25-36.0) days, P < 0.0001]. After PSM, the compositeoutcomes and length of ICU stay remained significantly increased for the patients with hypoglycaemia [compositeoutcomes: odd ratio (OR) 2.78, 95% CI, 1.30-5.88, P = 0.01; length of ICU stay: OR 1.60, 95% CI, 1.14-2.26, P = 0.007].
Conclusion:
Postoperative hypoglycaemia was an independent associated factor of adverse composite outcomes and a lengthened ICU stay after CABG. Hypoglycaemia should be avoided for both postoperative patients with and without diabetes.
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