Reviewed clinical summary · Source-linked · Educational use only

Does Real-Time Glucose Monitoring Help in Gestational Diabetes?

Clinical Bottom Line

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…

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
GDM ≥20 weeks gestation Enrolled & assessed RANDOMISED 2:1 Real-time CGM Dexcom G6 + CBG n = 74 CBG alone CBG 4x/day n = 37 %TIR 60-140 mg/dL
Proportion reaching endpoint
P = 0.027 %TIR (60-140 mg/dL) 93% Real-time CGM 88% CBG alone ARR+5 points
%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.

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