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Updated: Sep 25, 2026

Improving IV Insulin Administration in a Community Hospital
Published on: June 11, 2012
The rationale and management of hyperglycemia for in-patients with cardiovascular disease: time for change
Dace L Trence1, Janet L Kelly, Irl B Hirsch
1Division of Metabolism, Endocrinology, and Nutrition, University of Washington School of Medicine, Seattle, Washington 98195-6176, USA.
Insights
Aggressive glycemic control using intravenous glucose, insulin, and potassium (GIK) improves hospital patient outcomes, particularly for those with cardiovascular disease. Understanding insulin administration is crucial for effective treatment, even in non-diabetic patients.
Area of Science:
- Cardiology
- Endocrinology
- Critical Care Medicine
Background:
- Hyperglycemia is linked to poor wound healing and increased infections, especially post-cardiac surgery.
- Aggressive glycemic control shows promise for improving clinical outcomes in hospitalized patients.
- Cardiovascular disease patients may particularly benefit from optimized blood sugar management.
Purpose of the Study:
- To review the evidence supporting aggressive glycemic control in hospitalized patients.
- To explore the mechanisms behind improved outcomes with glucose, insulin, and potassium (GIK) therapy.
- To emphasize the importance of understanding insulin administration for effective patient care.
Main Methods:
- Review of existing literature on glycemic control strategies in hospitalized patients.
- Analysis of studies investigating the effects of intravenous (i.v.) glucose, insulin, and potassium (GIK) administration.
- Discussion of the practical aspects of both i.v. and subcutaneous (s.c.) insulin use.
Main Results:
- Evidence suggests that aggressive glycemic control improves outcomes in hospitalized patients, including those without diabetes.
- Intravenous GIK therapy has demonstrated better clinical outcomes.
- Potential mechanisms include insulin's effect on cytokines and free fatty acids.
Conclusions:
- Effective glycemic management, particularly with insulin, is vital for improving patient outcomes in hospital settings.
- Caregivers must be knowledgeable about various insulin administration strategies (i.v. and s.c.).
- Further research into the precise mechanisms of insulin's benefits is warranted.
Abstract:
There is increasing evidence that aggressive glycemic control for patients admitted into the hospital improves clinical outcomes, especially for patients with cardiovascular disease. There appear to be a variety of mechanisms for this. Although hyperglycemia has been shown to result in poor wound healing and more infectious complications, especially after cardiac surgical procedures, what has become clear is that the treatment of hyperglycemia with i.v. glucose, insulin, and potassium (GIK) results in better clinical outcomes even in patients without diabetes. The mechanisms for this are not year clear, but could be related to the insulin administration, perhaps due to suppression of various cytokines or free fatty acids. The practical use of insulin in these patients requires basic understanding of the use of both i.v. and s.c. insulin. Although there are several appropriate options for both of these routes of administration, it is critical that all caregivers involved in this population's care are knowledgeable about insulin strategies.
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