Which chronic complication of diabetes mellitus is characterized by the thickening and narrowing of small blood vessels, leading to impaired blood flow to the lower extremities?
Diabetic ketoacidosis (DKA).
Diabetic nephropathy.
Diabetic neuropathy.
Peripheral arterial disease (PAD).
The Correct Answer is D
Peripheral arterial disease (PAD) is a chronic complication of diabetes mellitus that results from the thickening and narrowing of small blood vessels, leading to reduced blood flow to the lower extremities. This can cause symptoms such as leg pain, numbness, and poor wound healing.
Incorrect choices:
a. This choice is incorrect. Diabetic ketoacidosis (DKA) is an acute complication characterized by high blood glucose levels, ketosis, and metabolic acidosis.
b. This choice is incorrect. Diabetic nephropathy is a chronic complication that affects the kidneys and can lead to impaired kidney function.
c. This choice is incorrect. Diabetic neuropathy refers to nerve damage due to diabetes and can cause symptoms such as tingling, pain, and loss of sensation in the extremities.
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Correct Answer is B
Explanation
Diabetic nephropathy is a chronic complication of diabetes mellitus that affects the kidneys and can lead to impaired kidney function and potential kidney failure. Prolonged high blood glucose levels damage the small blood vessels in the kidneys, leading to kidney damage.
Incorrect choices:
a. This choice is incorrect. Diabetic ketoacidosis (DKA) is an acute complication characterized by high blood glucose levels, ketosis, and metabolic acidosis.
c. This choice is incorrect. Diabetic neuropathy refers to nerve damage due to diabetes and can cause symptoms such as tingling, pain, and loss of sensation in the extremities.
d. This choice is incorrect. Diabetic retinopathy is a complication that affects the blood vessels of the retina and can lead to vision loss.
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.
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