Which of the following best describes type 1 diabetes mellitus?
Insulin resistance and relative insulin deficiency.
Onset typically occurs in adulthood.
Caused by an autoimmune destruction of pancreatic beta cells.
Mainly managed through oral hypoglycemic agents.
The Correct Answer is C
Type 1 diabetes mellitus is characterized by an autoimmune destruction of pancreatic beta cells, leading to an absolute insulin deficiency. It is not primarily characterized by insulin resistance (choice a) and is not typically diagnosed in adulthood (choice b). Oral hypoglycemic agents (choice d) are not the mainstay of treatment for type 1 diabetes.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Type 1 diabetes mellitus is characterized by an autoimmune process in which the body's immune system destroys the pancreatic beta cells responsible for producing insulin. This results in an absolute deficiency of insulin, requiring exogenous insulin administration for glycemic control.
Incorrect choices:
b. This choice is incorrect. Type 2 diabetes mellitus is characterized by insulin resistance and impaired insulin secretion, rather than 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. Prediabetes is a precursor to type 2 diabetes and involves impaired glucose tolerance, but it does not result from autoimmune destruction of beta cells.
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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