Feasibility of intraoperative continuous glucose monitoring: An observational study in general surgery patients
Authors' conclusion
Both Dexcom G6 and Freestyle Libre 2.0 CGMs were able to be utilized and functioned well if no sensor error occurred at time of initial warmup.
Study context
- Population
- Participants with DM undergoing surgery of ≥3 h duration76 enrolled
- Participants
- 94 participants
- Exposure
- CGM vs point of care (POC) capillary BG checks
- Freestyle Libre 2.0n = 50
- Dexcom G6n = 20
- Both devicesn = 6
- Outcome
- Agreement of CGM with POC BG
Methodological detailsfeasibility study, 18 excluded due to lost sensor data, surgery cancellation, or rescheduling to a satellite campus
- Feasibility study
- 18 excluded due to lost sensor data, surgery cancellation, or rescheduling to a satellite campus
Main finding
As reported in the abstract
| Group | Value | Matched pairs |
|---|---|---|
| Dexcom G6 | Pearson correlation coefficient 0.573 | 84 |
| Freestyle Libre 2.0 | Pearson correlation coefficient 0.771 | 239 |
Value
Dexcom G6Pearson correlation coefficient 0.573
Freestyle Libre 2.0Pearson correlation coefficient 0.771
Matched pairs
Dexcom G684
Freestyle Libre 2.0239
- Pearson correlation coefficient, combined groups
- 0.731
- Bias (CGM − POC BG), overall dataset, modified Bland-Altman
- −18.27 (SD 32.10)
Observational data: associations, not effects.
Further findings
| Outcome | Freestyle Libre 2.0 | Dexcom G6 | Both devices |
|---|---|---|---|
| Lost sensor data | 20% | 15% | 2 events |
Failure with sensor application
- Occurrences of failure with sensor application
- 0
Original publication
Feasibility of intraoperative continuous glucose monitoring: An observational study in general surgery patients. J Clin Anesth. Published 11 March 2023. doi:10.
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