Introduction & Objective: The G6 CGM system offers a 2-hour warmup and a 10-day lifespan; the G7 system (both from Dexcom) offers a 30-minute warmup and a 12-hour grace period of functionality after 10 days. We examined data gaps and alert availability with the two systems.
Methods: Real-world data were analyzed from 59,285 users in the US and Europe who uploaded ≥60 days of data from G6, transitioned to G7, and then uploaded ≥60 days of data from G7. Comparisons between the last 60 days of G6 use and the first 60 days of G7 use were analyzed.
Results: After switching to G7, the median between-session data gap duration decreased by 1.8 hours, and the proportion of gaps lasting ≥1 hour increased from 0.1% to 54.3% (Table). Most G7 sessions exceeded the 10-day lifespan and extended into the 12-hour grace period. Median time between sensor replacements was 14 minutes shorter with G7 than with G6.
Conclusion: The simpler sensor insertion and shorter warm-up time for G7 provide users with access to the CGM data sooner for more timely diabetes management decisions and the 12-hour grace period provides users flexibility in their schedules with continued access to CGM data.
L.H. Jepson: Employee; Dexcom, Inc. Stock/Shareholder; Dexcom, Inc. S.B. Andrade: Employee; Dexcom, Inc. J. Welsh: Employee; Dexcom, Inc.
