Impaired glucose tolerance
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Overview
Impaired Glucose Tolerance (IGT) is a pre-diabetic state of dysglycemia, that is associated with insulin resistance and increased risk of cardiovascular pathology. IGT may precede type 2 diabetes mellitus by many years. IGT is also a risk factor for mortality.
Criteria
| Diabetes mellitus
|
|---|
| Types of Diabetes |
| Diabetes mellitus type 1 Diabetes mellitus type 2 Gestational diabetes Pre-diabetes: |
| Disease Management |
| Diabetes management: •Diabetic diet •Anti-diabetic drugs •Conventional insulinotherapy •Intensive insulinotherapy |
| Other Concerns |
| Cardiovascular disease
Diabetic comas: Diabetic myonecrosis |
| Blood tests |
| Blood sugar Fructosamine Glucose tolerance test Glycosylated hemoglobin |
According to the criteria of the World Health Organization and the American Diabetes Association, impaired glucose tolerance is defined as:
- two-hour glucose levels of 140 to 199 mg per dL (7.8 to 11.0 mmol) on the 75-g oral glucose tolerance test. A patient is said to be under the condition of IGT when he/she has an intermediately raised glucose level after 2 hours, but less than would qualify for type 2 diabetes mellitus. The fasting glucose may be either normal or mildly elevated.
From 10 to 15 percent of adults in the United States have one of these conditions.
Treatment
The risk of progression to diabetes and development of cardiovascular disease is greater than for Impaired fasting glycaemia.
Although some drugs can delay the onset of diabetes, lifestyle modifications play a greater role in the prevention of the disease. Patients identified as having an IGT should exercise regularly and have a balanced diet removing the empty calories of sugar.
Carnitine has been shown to improve glucose uptake, regulation, and oxidation, though temporarily (i.e. only when levels are sustained in the blood).
References
See also
Acknowledgements
The content on this page was first contributed by: C. Michael Gibson, M.S., M.D.
Initial content for this page in some instances came from Wikipedia
List of contributors:
Suggested Reading and Key General References
Suggested Links and Web Resources
For Patients
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .

