Summary:In pregnant individuals with gestational diabetes mellitus (GDM), real-time continuous glucose monitoring (CGM) significantly increased the percentage of time in range (%TIR) compared to capillary blood glucose (CBG) monitoring, though it was associated with the need for further exploration of its impact on perinatal and neonatal outcomes.
| PICO | Description |
|---|---|
| Key Factor |
RCT
Diabetes Care · 2025
Real-Time CGM in Gestational Diabetes
RCT · gestational diabetes · 2:1 allocation
Trial design
Proportion reaching endpoint
%TIR (CGM)
93%
60-140 mg/dL
%TIR (CBG)
88%
60-140 mg/dL
Difference
+5 pts
TIR
P value
0.027
significant
⬡ Bottom Line
In GDM, real-time CGM achieved a significantly higher percent time in range (93% vs 88%, P=0.027) than capillary monitoring alone. Effects on perinatal and neonatal outcomes remain to be defined.
P
Population
Pregnant individuals with gestational diabetes mellitus at ≥20 weeks' gestation
I
Intervention
Real-time CGM (Dexcom G6) plus adjunctive capillary blood glucose monitoring
C
Comparator
Capillary blood glucose monitoring alone, four times daily
O
Outcome
Percent time in range (%TIR, 60-140 mg/dL); CGM significantly higher (93% vs 88%, P=0.027)
