Randomized Evaluation of Glycemic Control in the Medical Intensive Care Unit Using Real-Time Continuous Glucose...

Area of Science:

• Intensive care medicine
• Endocrinology
• Medical device technology

Background:

• Hyperglycemia is common in medical intensive care units (MICUs).
• The effectiveness of real-time continuous glucose monitoring (RT-CGM) in severely ill MICU patients with high APACHE-II scores was previously unstudied.

Purpose of the Study:

• To evaluate if RT-CGM improves glycemic control and variability.
• To determine if RT-CGM reduces hypoglycemia in critically ill MICU patients.
• To assess CGM accuracy in this patient population.

Main Methods:

• Thirty-five critically ill patients (APACHE-II score ≥20) were randomized to RT-CGM or blinded CGM.
• Insulin infusion followed a modified Yale protocol targeting 80-120 mg/dL.
• Outcomes included time in normoglycemia/hypoglycemia, glycemic variability, and CGM accuracy.

Main Results:

• No significant differences in time in target glycemic range, variability, or hypoglycemia between RT-CGM and control groups.
• RT-CGM device (GlucoDayS) demonstrated good accuracy, with 98.6% of data in error grid Zones A/B.
• Mean absolute relative deviation was 11.2%.

Conclusions:

• RT-CGM did not enhance glycemic control or reduce hypoglycemia in this patient cohort.
• The study's insulin infusion protocol achieved good overall glucose control with low hypoglycemia risk.
• Further improvements in glucose management in this setting may be challenging.