Fig. 4: Continuous glucose monitor data display.
From: Expanding the horizon of continuous glucose monitoring into the future of pediatric medicine
This CGM tracing shows 4 blood glucose measurements (red dots), of which 3 are in a normal glucose range. The black line represents CGM data. However, there are large post-prandial excursions as well as 2 episodes of hypoglycemia that would be missed by the intermittent blood glucose checks. In the situations where the blood glucose checks were normal prior to hypoglycemia, if the patient saw the CGM glucose rapidly falling they may have been able to completely prevent the hypoglycemia.
