Blood glucose variability refers to the constant fluctuation of blood glucose between peaks and troughs. It is one of the important indicators for evaluating glycemic control, and its harm to chronic diabetic complications is more severe than persistent hyperglycemia.
We commonly use two indicators to assess blood glucose variability:
Maximum blood glucose fluctuation rangeIf the difference between the highest and lowest blood glucose values measured multiple times in a day is ≥ 4.4 mmol/L, it indicates large blood glucose variability.
Continuous Glucose Monitoring (CGM, commonly known as “dynamic monitoring”)By wearing a continuous glucose monitoring device, you can obtain a dynamic blood glucose graph to observe the full-day fluctuation pattern. It can also assess the risk of hypoglycemia and hyperglycemia.Reminder:The poorer the function of pancreatic β-cells, the greater the blood glucose fluctuation.
Long-term large blood glucose variability significantly increases the risk of diabetic complications.For type 2 diabetes patients with large blood glucose fluctuations, supplementation with exogenous insulin is a very necessary measure.