Dexcom G7 Accuracy and Reproducibility in the Intensive Care Unit
Authors' conclusion
Mean RAD of the Dexcom G7 sensor in the ICU setting was slightly higher than the outpatient use labeling, but was similar to a non-ICU hospital setting.
Study context
- Population
- Intensive care unit (ICU) patients with known diabetes or stress hyperglycemia treated with insulin; mean ± SD age 55 ± 12 years; preexisting diabetes 40%, stress hyperglycemia 60%1,515 sensor-BG pairs
- Participants
- 30 vs 35
- Comparison
- Dexcom G7 continuous glucose monitor (CGM) sensor glucose vs blood glucose (BG) measurements obtained in usual ICU care
- ICUn = 30
- Non-ICUn = 35
- Outcome
- Accuracy of Dexcom G7 CGM (sensor-BG paired accuracy metrics)
Methodological detailssingle-centre, Two Dexcom G7 sensors placed on the abdomen and/or upper arm
- Single-centre
- Two Dexcom G7 sensors placed on the abdomen and/or upper arm
Performance
As reported in the abstract
Accuracy of Dexcom G7 vs BG in the ICU (1515 sensor-BG pairs)
Mean difference (bias), ICU
−12 mg/dL
median: −6
Mean relative absolute difference (RAD), ICU
16%
median: 12%
Further findings
Mean RAD in the ICU, plasma glucose as reference
- Mean RAD using plasma glucose as reference
- 13% (median: 9%)
Mean RAD in the ICU, capillary glucose as reference
- Mean RAD using capillary glucose
- 17% (median: 13%)
Mean RAD in non-ICU setting (35 adults with T2D)
- Mean RAD, non-ICU
- 15% (median: 13%)
RAD by duration since sensor insertion
- No meaningful differences across the duration of time since sensor insertion
RAD and severity of illness
- No correlation between mean RAD and severity of illness
Original publication
Dexcom G7 Accuracy and Reproducibility in the Intensive Care Unit. Diabetes Technol Ther. Published 13 May 2025. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →