Implementing Continuous Glucose Monitoring Alerts in Clinical Settings—Moving Beyond Efficacy

Background

Continuous glucose monitoring (CGM) has been shown to improve glycemic outcomes in inpatient settings, increasing time in range (TIR) and reducing hypoglycemia compared to traditional point-of-care monitoring. Understanding the specific contributions of CGM features, such as alarms, is crucial for optimizing diabetes management in clinical environments. The implementation of CGM in hospitals requires careful consideration of clinical workflows and alarm management to ensure effective use.

Data Highlights

The trial conducted by Wang et al. involved 533 adults in a specialized endocrinology unit, assessing the effects of threshold and predictive alarms on glycemic control.

Key Findings

• Threshold alarms improved TIR by 3.9 percentage points compared to CGM alone.
• Predictive alarms did not yield any glycemic advantage in the trial.
• The study was conducted in a resource-rich endocrinology unit, which may limit generalizability to standard inpatient care.
• Alarm operationalization and clinical workflows were inadequately characterized in the study.
• Future research should document alarm fidelity, including delivery, acknowledgment, and response actions.

Clinical Implications

Healthcare providers should be aware of the modest benefits of threshold alarms in CGM systems. Understanding the specific care environment and resources available is essential for interpreting the results of CGM studies.

Conclusion

The findings from this trial highlight the importance of alarm systems in CGM implementation.

Related Resources & Content

1. Wang et al., Clinical Trial, 2023 -- Implementing Continuous Glucose Monitoring Alerts
2. Intensive Care Medicine — Assessment of Subcutaneous Glucose Monitoring and Its Impact on Glucose Control
3. aace endocrine ai — Randomized trial finds continuous glucose monitoring improves TIR
4. Frontiers in Endocrinology — Bridging the Continuous Glucose Monitoring decision gap: from glycaemic variability data to actionable stability in diabetes care
5. aace endocrine ai — Remote CGM monitoring may improve glycemic outcomes
6. American Diabetes Association’s Standards of Care in Diabetes—2026
7. Management of Hyperglycemia in Hospitalized Adult Patients
8. In-Hospital Diabetes Management by a Diabetes Team and Insulin Titration Algorithms Based on Continuous Glucose Monitoring or Point-of-Care Glucose Testing in Patients With Type 2 Diabetes (DIATEC): A Randomized Controlled Trial | Diabetes Care | American Diabetes Association
9. Results From a Randomized Trial of Intensive Glucose Management Using CGM Versus Usual Care in Hospitalized Adults With Type 2 Diabetes: The TIGHT Study - PMC
10. https://rcastoragev2.blob.core.windows.net/c885275f054194fcbe4217385de9b737/PMC7576427.pdf
11. A Consensus Statement for Continuous Glucose Monitoring Metrics for Inpatient Clinical Trials
12. Continuous Glucose Monitor Apps Correction: Dexcom, Inc. Issues Correction for G7 Apps and ONE+ Apps due to a Software Design Error That Does Not Alert Users of Unexpected Sensor Failure | FDA