🩸 Glucose Control in Critically Ill Patients
Glycemic targets and insulin-management direction for critically ill patients, avoiding both hyperglycemia and hypoglycemia.
A moderate target (140–180 mg/dL) balances the harms of hyperglycemia against the hypoglycemia risk of tight control (original synthesis · not guideline verbatim).
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When to use
Use in the ICU to select a blood-glucose target band and decide when to start IV insulin infusion, with attention to avoiding hypoglycemia.
How it works
Target generally 140–180 mg/dL (7.8–10.0 mmol/L) for most critically ill; start IV insulin infusion when glucose is persistently > 180 mg/dL; avoid tight control (80–110) due to hypoglycemia harm; monitor frequently.
Key points
- A moderate target (140–180 mg/dL) balances the harms of hyperglycemia against the hypoglycemia risk of tight control (original synthesis · not guideline verbatim).
- Tight glucose control (NICE-SUGAR) increased severe hypoglycemia and mortality, so it is no longer recommended.
- Frequent point-of-care monitoring and a validated infusion protocol reduce both hyper- and hypoglycemic excursions.
References
- NICE-SUGAR Investigators. Intensive vs conventional glucose control. N Engl J Med 2009.
- Surviving Sepsis Campaign 2021 — glycemic control.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Current glucose | 200 |
|---|---|
| Unit | mg/dL |
| Population | Most critically ill patients (target 140–180) |
→Glucose200 mg/dL
- Glucose：200 mg/dL (11.1 mmol/L)
- Target range：Standard 140–180 mg/dL (7.8–10.0 mmol/L)
- Status / management：Above target — ≥ 180 mg/dL (10 mmol/L): start/intensify IV insulin infusion, target 140–180 mg/dL
| Current glucose | 200 |
|---|---|
| Unit | mmol/L |
| Population | Selected populations — postop/cardiac/neuro (may be 110–140) |
→Glucose3600 mg/dL
- Glucose：3600 mg/dL (200 mmol/L)
- Target range：Tighter 110–140 mg/dL (6.1–7.8 mmol/L)
- Status / management：Marked hyperglycemia — Control with IV insulin infusion; investigate DKA/HHS, infection, steroids/parenteral nutrition and other triggers
Frequently asked questions
- What is Glucose Control in Critically Ill Patients?
- Glycemic targets and insulin-management direction for critically ill patients, avoiding both hyperglycemia and hypoglycemia.
- How is Glucose Control in Critically Ill Patients calculated? What is the core formula?
- Target generally 140–180 mg/dL (7.8–10.0 mmol/L) for most critically ill; start IV insulin infusion when glucose is persistently > 180 mg/dL; avoid tight control (80–110) due to hypoglycemia harm; monitor frequently.
- When is Glucose Control in Critically Ill Patients used?
- Use in the ICU to select a blood-glucose target band and decide when to start IV insulin infusion, with attention to avoiding hypoglycemia.
- What are the key clinical points for Glucose Control in Critically Ill Patients?
- A moderate target (140–180 mg/dL) balances the harms of hyperglycemia against the hypoglycemia risk of tight control (original synthesis · not guideline verbatim). Tight glucose control (NICE-SUGAR) increased severe hypoglycemia and mortality, so it is no longer recommended. Frequent point-of-care monitoring and a validated infusion protocol reduce both hyper- and hypoglycemic excursions.
- What are the limits and cautions when using Glucose Control in Critically Ill Patients?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- How is Glucose Control in Critically Ill Patients calculated in practice? Can you show a worked example?
- Inputs: Current glucose 200, Unit mg/dL, Population Most critically ill patients (target 140–180) → Result: Glucose 200 mg/dL（Glucose: 200 mg/dL (11.1 mmol/L), Target range: Standard 140–180 mg/dL (7.8–10.0 mmol/L), Status / management: Above target — ≥ 180 mg/dL (10 mmol/L): start/intensify IV insulin infusion, target 140–180 mg/dL） Inputs: Current glucose 200, Unit mmol/L, Population Selected populations — postop/cardiac/neuro (may be 110–140) → Result: Glucose 3600 mg/dL（Glucose: 3600 mg/dL (200 mmol/L), Target range: Tighter 110–140 mg/dL (6.1–7.8 mmol/L), Status / management: Marked hyperglycemia — Control with IV insulin infusion; investigate DKA/HHS, infection, steroids/parenteral nutrition and other triggers）