Which diagnostic criterion is indicative of diabetes mellitus on a fasting blood glucose test?
Fasting blood glucose level of 110 mg/dL.
Fasting blood glucose level of 126 mg/dL or higher.
Fasting blood glucose level of 90 mg/dL.
Fasting blood glucose level of 100 mg/dL.
The Correct Answer is B
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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Related Questions
Correct Answer is D
Explanation
Diabetic retinopathy, a microvascular complication of diabetes mellitus, can lead to blurred or distorted vision due to damage to the blood vessels in the retina.
Incorrect choices:
a. This choice is incorrect. Polyuria, polydipsia, and polyphagia are the "three P's" associated with hyperglycemia in diabetes mellitus.
b. This choice is incorrect. Nausea, vomiting, and abdominal pain are not typically associated with blurred or distorted vision.
c. This choice is incorrect. Impaired wound healing and increased susceptibility to infections are related to the effects of hyperglycemia on blood flow and immune function, rather than visual disturbances.
Correct Answer is A
Explanation
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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