Perioperative medicine & outcomes
Accuracy of continuous glucose monitoring during noncardiac surgery: a prospective, blinded observational multicentre cohort study
Main finding · Overall bias, CGM vs blood glucose, 3 timepoints in first 24 hResult — go to the resultMean difference (bias) 0.38 mM 95% CI 0.23–0.53Authors' conclusion
The accuracy of state-of-the-art continuous glucose monitoring is sufficient for perioperative use and could enhance perioperative surveillance of dysglycaemia.
Study context
- Population
- Patients aged >50 yr undergoing noncardiac surgery requiring at least 24 h of hospital stay340 paired readings
- Participants
- 118 patients
- Exposure
- Continuous glucose monitoring vs blood glucose
- Outcome
- Overall mean difference (bias) before surgery, at end of surgery, and 24 h after surgery (Bland-Altman analysis)
Methodological detailsblinded, multicentre
- Blinded
- Multicentre
Main finding
As reported in the abstract
Overall bias, CGM vs blood glucose, 3 timepoints in first 24 h
Mean difference (bias)
0.38 mM
95% CI 0.23–0.53
CGM vs Blood glucose
mean difference (bias) 0.38 mM (95% CI 0.23–0.53)
Observational data: associations, not effects.
Secondary outcomes
Bias before start of surgery
- Bias (n=116)
- 1.08 mM (95% CI: 0.87-1.29)
Bias at end of surgery
- Bias (n=113)
- 0.15 mM (95% CI: −0.15 to 0.46)
Mean absolute relative difference
- Range
- 12.0% to 18.3%
Surveillance error grid analyses
- CGM values within acceptable risk ranges
- >98%
Original publication
Accuracy of continuous glucose monitoring during noncardiac surgery: a prospective, blinded observational multicentre cohort study. Br J Anaesth. Published 24 July 2025. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →