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CompletedNCT00166491Updated Apr 18, 2011

Comparing Two Ways of Controlling Blood Sugar With Insulin in Patients Admitted to the Intensive Care Unit

An interventional study of Insulin in Critical Illness and Hyperglycemia, sponsored by Mayo Clinic. Completed at 1 site in United States. Open to participants aged 21 Years and older. Per ClinicalTrials.gov, last updated 2011-04-18.

Sponsored by Mayo Clinic · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
238
Allocation
Randomized
Ages
21 Years and older
Sex
All
01

Study summary

The purpose of this study is to determine if there is any difference between two ways of controlling blood sugar with insulin. In patients admitted to the intensive care unit, blood sugar levels often rise due to the stress of illness or surgery. Studies have shown that patients do better if their blood sugar is kept normal. In order to maintain normal blood sugar levels, the investigators often give insulin (a substance made by the body), and they decide how much to give based on how high the blood sugar is. This study will compare two different ways of deciding how much insulin to give and compare how well each method keeps the blood sugar in a normal range. Both ways of controlling blood sugar are institutionally-approved protocols and part of routine care.

Read the detailed description

Improved outcomes have been demonstrated with tight control of blood glucose in critically ill patients. A number of look-up algorithms based on hourly glucose measurements and titrated intravenous insulin have been developed for the intensive care unit (ICU). Despite the numerous published algorithms, no study has investigated which algorithm results in optimal glycemic control in critically ill patients. The purpose of this trial is to compare two institutionally approved intravenous insulin administration algorithms and describe subsequent glycemic control. We hypothesize that the protocol that allows for variable insulin administration for a given blood glucose (multiple algorithms) will be associated with more optimal glycemic control. Optimal glycemic control will be defined by time spent within a predetermined blood glucose range. In addition, the number of hypoglycemic episodes and mean and maximum blood glucose concentrations will also be measured. This trial will determine which insulin infusion algorithm is most effective in terms of glycemic control, and allow for standardization of glucose management in accordance with best practice.

02

Conditions studied

  • Critical Illness
  • Hyperglycemia
03

In context

Hyperglycemia

699 studies on the registry are indexed under Hyperglycemia; 105 are open to participants now.

This study's enrollment of 238 is above the median of 46 across 521 interventional studies indexed under Hyperglycemia.

Browse Hyperglycemia studies →

Lead sponsor

Mayo Clinic is the lead sponsor of 3,218 studies on the registry; 670 are open to participants now.

Of its 445 completed or terminated interventional studies of FDA-regulated products, 313 (70%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
21 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Inclusion Criteria:

  • All patients admitted to the 7MB D/E ICU will be eligible for this study
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single
Enrollment
238 participants (actual)

Interventions

  • DrugInsulin
06

What researchers measure

Primary outcomes

  1. Percentage of time points within range during protocol (serum glucose 60-150 mg/dl) [%]

  2. Mean blood glucose level during study period [mg/dl]

Secondary outcomes

  1. Time from initiation of protocol to first measurement in target range (serum glucose 60-150 mg/dl) [hours]

  2. Number of time points below range (hypoglycemic episodes with serum glucose < 60) normalized by study period [hypoglycemic glucose determinations/total glucose determinations]

  3. Time enrolled in the trial [hours]

  4. Maximum blood glucose level during study period [mg/dl]

  5. Mean hourly intravenous (IV) insulin dose calculated daily [units/hour]

07

Study locations

1 site
  • Mayo Clinic
    Rochester, Minnesota 55905, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 18, 2011, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00166491
Lead sponsor
Mayo Clinic
First posted
Sep 14, 2005
Start date
Jul 2005
Primary completion
Mar 2007
Completion
Mar 2007
Last update
Apr 18, 2011

Study contacts

Roy K. Tuhin, M.D., Ph.D.
principal investigator · Mayo Clinic
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2011. You cannot join it, but the record below documents what was studied.

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