The Accuracy of Continuous Glucose Monitoring in the Medical Intensive Care Unit

Wannita Tingsarat, Patinut Buranasupkajorn, Weerapan Khovidhunkit, Patchaya Boonchaya‐anant, Nitchakarn Laichuthai

2021Journal of Diabetes Science and Technology32 citationsDOI Open Access PDF

Abstract

OBJECTIVE: To assess the accuracy of continuous glucose monitoring (CGM) in medical intensive care unit (MICU) patients. METHODS: sensor accuracy was assessed versus capillary blood glucose (CBG) and plasma glucose (PG) using the mean absolute relative difference (MARD), surveillance error grid (SEG) analysis and modified Bland-Altman plots. RESULTS: Using CBG as a reference, MARD was 6.6%. Overall, 99.7% of the CGM readings were within the "no risk" zone. No significant differences in accuracy were seen within vasopressor subgroups. Using PG as the reference, MARD was 8.8%. The surveillance error grid analysis showed 95.2% of glucose readings were within the "no risk" zone. There were no device-related adverse events. CONCLUSION: The CGM sensor showed acceptable accuracy in MICU patients, regardless of vasopressor use.

Topics & Concepts

Continuous glucose monitoringMedicineIntensive care unitBlood Glucose Self-MonitoringMean differenceEmergency medicinePlasma glucoseContinuous monitoringDiabetes mellitusIntensive care medicineInternal medicineConfidence intervalType 1 diabetesEndocrinologyEconomicsOperations managementHyperglycemia and glycemic control in critically ill and hospitalized patientsDiabetes Management and ResearchSpectroscopy Techniques in Biomedical and Chemical Research