Evaluating the precision and reliability of real-time continuous glucose monitoring systems in ambulatory settings: a systematic review
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View abstract on PubMed
Summary
This summary is machine-generated.Continuous glucose monitoring (CGM) devices show good accuracy for normal and high glucose levels, but their accuracy for detecting hypoglycemia needs improvement. Further advancements are needed for reliable hypoglycemia detection in diabetes management.
Area Of Science
- Endocrinology
- Medical Devices
- Diabetes Technology
Background
- Continuous glucose monitoring (CGM) is vital for diabetes management, offering alerts for glucose trends and improving quality of life.
- Uncertainty remains regarding CGM accuracy compared to self-monitoring of blood glucose, particularly for hypoglycemia detection.
Purpose Of The Study
- To evaluate the clinical and numerical accuracy, sensitivity, and specificity of commercially available CGM devices.
- To compare CGM performance against arterial or venous blood glucose as the reference standard.
Main Methods
- Systematic review of studies from Cochrane Library, PubMed, EMBASE, and LILACS.
- Quality assessment using the QUADAS-2 tool.
- Data extraction for accuracy metrics and statistical analysis using Review Manager software.
Main Results
- Twenty-two studies including 2294 patients were analyzed.
- CGM devices showed an average mean absolute relative difference of 9.4% for overall accuracy.
- None met ISO 15197:2013 criteria for hypoglycemia (±15 mg/dL), but two met criteria for hyperglycemia (±15%).
- Average sensitivity and specificity for hypoglycemia were 85.7% and 95.33%, respectively.
- Average sensitivity and specificity for hyperglycemia were 97.45% and 96%, respectively.
Conclusions
- Current CGM devices offer adequate accuracy for euglycemia and hyperglycemia.
- CGM accuracy for hypoglycemia detection remains insufficient, though improvements have been observed over time.
- Further research and device development are needed to enhance hypoglycemia monitoring accuracy.
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