Intermittent Use of Flash Glucose Monitoring Improves Glycemic Control in Chinese Older Patients with Type 2 Diabetes Mellitus.

OBJECTIVE

To explore the efficacy and safety of intermittent use of flash glucose monitoring (FGM) for improving glycemic control in Chinese elderly patients with type 2 diabetes mellitus (T2DM).

METHODS

This is a prospective observational study involving patients with T2DM aged ≥60 years. The study period spans 12 weeks, with participants wearing FGM at weeks 0, 5, and 10. Participants were divided into two subgroups based on HbA1c at enrollment: < 7.0% and ≥7.0%. The primary outcome of the study was HbA1c level. Secondary outcomes included time in range (3.9-10mmol/L) (TIR), time below range (<3.9mmol/L) (TBR), time above range (>10.0mmol/L) (TAR), and glycemic variability (GV).

RESULTS

A total of 68 patients completed the 12-week FGM follow-up (age 67.9 ± 5.2 years; BMI 25.4 ± 3.3kg/m²). Overall findings revealed that compared to baseline, HbA1c decreased from 7.81 ± 1.25% to 7.44±1.10% after 12 weeks of intermittent wearing of FGM (p <0.001). In the subgroup analysis with HbA1c ≥7.0%, the results showed a significant reduction in HbA1c of 0.51mmol/L after 12 weeks (8.36 ± 0.95% vs 7.75 ± 0.97%, p < 0.001). And there was a significant reduction in TBR in the subgroup with HbA1c < 7% (p = 0.028). Multiple linear regression analysis showed that the baseline HbA1c (β = -0.529, P<0.001), duration of T2DM (β = 0.341, P = 0.001), and the frequency of sensor use (β = -0.269, P = 0.043) were associated with the reduction in HbA1c level.

CONCLUSION

Intermittent use of FGM is associated with an improvement in glycemic outcomes and reduces the risk of hypoglycemia in Chinese elderly patients with T2DM.