Abstract
BackgroundFlash glucose monitoring (FGM) is a factory-calibrated, blood glucose measuring sensor system for patients with diabetes. We aimed to investigate the correlation between the sensor glucose (SG) value obtained using an FGM device and the traditional self-monitoring of blood glucose (SMBG) value.MethodsIn 30 patients with diabetes under insulin treatment, SG and SMBG values were measured for 2 weeks, and the correlation between the values was analyzed.ResultsThe mean number of accumulated measurements of SG values was 1223.2 ± 193.0, whereas that of the SMBG values was 49.2 ± 21.3. Although SG and SMBG values showed a favorable correlation (R2 = 0.8413), SG values were lower than SMBG values by an average of 7.9 ± 29.8 mg/dL. The correlation patterns fell into four types: low type (SG values lower than SMBG values; n = 12), high type (SG values higher than SMBG values; n = 3), cross type (the slope of the two regression lines crossed at a certain measurement value; n = 14), and matching type (the values overlapped; n = 1).ConclusionsRecognition of the characteristic correlation patterns between SG and SMBG values is indispensable for certified diabetes educators to provide appropriate treatment guidance to patients with diabetes.
Highlights
Flash glucose monitoring (FGM) is a factory-calibrated, blood glucose measuring sensor system for patients with diabetes
For Certified Diabetes Educators (CDEs), FGM is a potent educational tool, because by using it, we can visualize the effect of meals and exercise by confirming the time course change of blood glucose values that had not been visible until real-time GM such as FGM came into use
The correlation patterns spontaneously fell into four types: low type, when the regression line was lower than the diagonal line, in other words, when sensor glucose (SG) values were lower than self-monitoring of blood glucose (SMBG) values (n = 12); cross type, when the lines crossed at a certain measurement value (n = 14); high type, when the regression line was higher than the diagonal line (n = 3); and matching type, when the values overlapped (n = 1) (Fig. 2a–d)
Summary
Flash glucose monitoring (FGM) is a factory-calibrated, blood glucose measuring sensor system for patients with diabetes. The SG values obtained at the time of scanning greatly influence the patient’s everyday diabetes treatment; i.e., patients may misjudge how to treat themselves (for example, treating themselves as being hypoglycemic or increasing/decreasing the insulin dosage). Based on these reasons, we conducted the present pilot study using FGM and SMBG for 2 weeks in outpatients with diabetes who were receiving diabetes education using SMBG to analyze the specific correlation between SG and SMBG values
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