Which classification of diabetes mellitus is characterized by an autoimmune destruction of pancreatic beta cells, resulting in an absolute insulin deficiency?
Type 1 diabetes mellitus.
Type 2 diabetes mellitus.
Gestational diabetes mellitus.
Secondary diabetes mellitus.
The Correct Answer is A
Type 1 diabetes mellitus is characterized by an autoimmune response that targets and destroys pancreatic beta cells, leading to an absolute deficiency of insulin production.
Incorrect choices:
b. This choice is incorrect. Type 2 diabetes mellitus involves insulin resistance and relative insulin deficiency, but not the autoimmune destruction of beta cells.
c. This choice is incorrect. Gestational diabetes mellitus occurs during pregnancy and is not characterized by autoimmune destruction of beta cells.
d. This choice is incorrect. Secondary diabetes mellitus is caused by other underlying medical conditions or factors and is not primarily characterized by autoimmune destruction of beta cells.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The OGTT involves drinking a glucose solution and measuring blood glucose levels at specific intervals. It is used to assess glucose tolerance and diagnose gestational diabetes mellitus during pregnancy.
Incorrect choices:
a. This choice is incorrect. The fasting blood glucose test measures blood glucose levels after an overnight fast and is not specifically used for diagnosing gestational diabetes.
b. This choice is incorrect. The HbA1c test measures average blood glucose levels over the past 2-3 months and is not typically used for diagnosing gestational diabetes.
d. This choice is incorrect. The random blood glucose test measures blood glucose levels at any time and is not specific for diagnosing gestational diabetes.
Correct Answer is B
Explanation
A fasting blood glucose level of 126 mg/dL or higher on two separate occasions is indicative of diabetes mellitus. A level of 110 mg/dL is within the normal range, and levels of 90 mg/dL and 100 mg/dL are also normal.
Incorrect choices:
a. This choice is incorrect. A fasting blood glucose level of 110 mg/dL is within the normal range.
c. This choice is incorrect. A fasting blood glucose level of 90 mg/dL is within the normal range.
d. This choice is incorrect. A fasting blood glucose level of 100 mg/dL is within the normal range.
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