PT  - JOURNAL ARTICLE
AU  - Fernando Gomez-Peralta
AU  - Timothy Dunn
AU  - Katherine Landuyt
AU  - Yongjin Xu
AU  - Juan Francisco Merino-Torres
TI  - Flash glucose monitoring reduces glycemic variability and hypoglycemia: real-world data from Spain
AID  - 10.1136/bmjdrc-2019-001052
DP  - 2020 Mar 01
TA  - BMJ Open Diabetes Research & Care
PG  - e001052
VI  - 8
IP  - 1
4099  - http://drc.bmj.com/content/8/1/e001052.short
4100  - http://drc.bmj.com/content/8/1/e001052.full
SO  - BMJ Open Diab Res Care2020 Mar 01; 8
AB  - Objective Observations in real-world settings support and extend findings demonstrated in randomized controlled trials that show flash glucose monitoring improves glycemic control. In this study, Spain-specific relationships between testing frequency and glycemic parameters were investigated under real-world settings.Research design and methods Deidentified glucose and user scanning data were analyzed and readers were rank ordered into 20 equal sized groups by daily scan frequency. Glucose parameters were calculated for each group: estimated HbA1c, time below range (<70 and ≤54 mg/dL), within range (70–180 mg/dL), and above range (>180 mg/dL). Glycemic variability (GV) metrics were described and data obtained from sensors in Spain and worldwide were compared.Results Spanish users (n=22 949) collected 37.1 million glucose scans, 250 million automatically recorded glucose readings, and checked glucose values via a mean of 13 scans/day. Estimated HbA1c, time below 70 mg/dL, at or below 54 mg/dL, above 180 mg/dL, and GV metrics were significantly lower in the highest compared with lowest scan rate group (39.6 to 3.9 scans/day). Time-in-range was higher for the highest versus lowest scan rate group at 15.6 vs 11.5 hours/day, respectively. GV metrics correlated positively with time below 70 mg/dL, at or below 54 mg/dL, above 180 mg/dL, and negatively with time-in-range. The relationship between glucose metrics and scan rate was similar in Spain and worldwide. However, time in hypoglycemia in Spain was higher in the groups with lower scan rates.Conclusions As seen in clinical trials, flash glucose monitoring in real-world settings allows frequent glucose checks. High scan rates are associated with the favorable glycemic markers of increased time-in-range and reduced time in hyperglycemia and hypoglycemia, and GV. The same trends, with unique nuances, are observed in both Spanish and global data.