Which patients should be evaluated for blood glucose variability?
1Diabetes Centre, A.S.S. 1 Triestina, Trieste, Italy.
Diabetes, Obesity & Metabolism
|September 17, 2013
Summary
Glycaemic variability, or blood glucose fluctuations, is crucial for diabetes management. Minimizing this variability alongside HbA1c and glucose levels aids in preventing acute and chronic diabetes complications.
Area of Science:
- Endocrinology and Metabolism
- Diabetes Research
- Clinical Biochemistry
Background:
- Diabetes mellitus is defined by glycaemic disorders, including chronic hyperglycemia and acute glucose fluctuations (glycaemic variability).
- Glycaemic variability is increasingly recognized as a significant factor in diabetes control and the prevention of vascular complications.
Purpose of the Study:
- To highlight the importance of glycaemic variability in diabetes management.
- To advocate for a comprehensive antidiabetic strategy that minimizes all components of glycaemic control, including glycaemic variability.
Main Methods:
- Review of current understanding and clinical relevance of glycaemic variability.
- Identification of patient populations benefiting from glycaemic variability monitoring (e.g., those at risk of hypoglycemia, with postprandial hyperglycemia, or requiring insulin adjustment).
Main Results:
- Glycaemic variability is a key determinant for effective diabetes control.
- Monitoring blood glucose variability provides valuable insights for therapeutic adjustments.
Conclusions:
- A global antidiabetic strategy should aim to minimize HbA1c, fasting and postprandial glucose, and glycaemic variability.
- Analysis of blood glucose variability serves as an essential tool for clinicians and patients in managing therapy and preventing both acute (hypoglycemia) and chronic (macrovascular) complications.
Related Concept Videos
Type II Diabetes Mellitus III: Clinical Manifestations and Diagnosis
Type 2 diabetes mellitus develops gradually and is often asymptomatic in early stages.Clinical ManifestationsWhen symptoms appear, they include fatigue, blurred vision, pruritus, delayed wound healing, and recurrent infections, particularly candidal infections. Peripheral neuropathy may present as numbness or tingling in the extremities. Classic hyperglycemia symptoms—polyuria, polydipsia, and polyphagia—are less common. Most patients are overweight and frequently have associated hypertension...
Hyperglycemia
Hyperglycemia is an abnormally high blood glucose level. It is diagnosed by fasting glucose ≥126 mg/dL, 2-hour oral glucose tolerance test (or OGTT) ≥200 mg/dL, random glucose ≥200 mg/dL with symptoms, or HbA1c ≥6.5%. However, HbA1c results may be unreliable in certain conditions, such as anemia or hemoglobinopathies, and the diagnosis should be confirmed unless classic symptoms are present. Postprandial hyperglycemia is typically considered significant when glucose levels exceed 180 mg/dL two...
Diabetes Mellitus: Type 2 and Gestational
Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
Diabetes: Symptoms, Diagnosis, and Complications
For most patients, experiencing several weeks of polyuria, polydipsia, fatigue, and significant weight loss may indicate the presence of diabetes. Furthermore, adults displaying the phenotypic appearance of type 2 diabetes (particularly those who are obese and not initially insulin-requiring), may have islet cell autoantibodies, suggesting autoimmune-mediated β cell destruction and a diagnosis of latent autoimmune diabetes of adults (LADA). The categorization of glucose homeostasis is based on...
Hypoglycemia and Glucagon
Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...
Hypoglycemia
Hypoglycemia is a blood glucose level below 70 mg/dL. It commonly occurs in individuals using insulin or insulin-secreting drugs, but may also arise in non-diabetic conditions. People with type 1 diabetes are at the highest risk because they depend on exogenous insulin. People with type 2 diabetes are also at risk, especially when treated with insulin or medications such as sulfonylureas, which increase insulin release regardless of blood glucose levels. It develops when insulin levels exceed...

