Neuropathies are a potential complication of diabetes. Why do these occur?
Thickening and ischemia of the vessels that supply the nerve fibers.
Infection in the nerves.
Excessive glucose exposure to the brain and spinal cord.
Inability to provide continuous glucose to the brain and spinal cord.
The Correct Answer is A
Choice A reason: Neuropathies occur due to the thickening, sclerosis, obstruction, and ischemia of the small blood vessels that supply the nerves (vasa nervorum). Chronic hyperglycemia leads to damage of these blood vessels, reducing blood flow and oxygen supply to the nerves. This ischemia results in nerve degeneration, delayed nerve conduction, and impaired sensory function, which are characteristic of diabetic neuropathy.
Choice B reason: Infection in the nerves is not a primary cause of diabetic neuropathy. While infections can affect the nerves, the neuropathy associated with diabetes is primarily due to vascular complications and chronic hyperglycemia, not infections.
Choice C reason: Excessive glucose exposure to the brain and spinal cord is not directly related to neuropathy. The neuropathic complications in diabetes are due to the damage of peripheral nerves caused by hyperglycemia and vascular insufficiency, rather than glucose affecting the central nervous system.
Choice D reason: Inability to provide continuous glucose to the brain and spinal cord is not a cause of neuropathy. The brain and spinal cord typically have a continuous supply of glucose. Neuropathy in diabetes results from the damage to the peripheral nerves due to prolonged high blood glucose levels and subsequent vascular complications.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Excessive fluid replacement can lead to hypervolemia because it increases the total volume of fluid in the body. This can overwhelm the body's regulatory mechanisms, leading to fluid overload.
Choice B reason: Dehydration is not a cause of hypervolemia. In fact, dehydration is the opposite condition, where there is a lack of fluid in the body. Dehydration leads to a decrease in fluid volume, not an increase.
Choice C reason: Liver cirrhosis can cause hypervolemia because it impairs the liver's ability to regulate fluid balance. This can result in fluid retention and buildup in the body, leading to hypervolemia.
Choice D reason: Kidney failure can cause hypervolemia because the kidneys are responsible for maintaining fluid balance by excreting excess fluid. When the kidneys fail, they cannot effectively remove excess fluid, leading to fluid overload.
Correct Answer is C
Explanation
Choice A reason: Hepatic tumors, or liver tumors, are not the most common type of cancer in children. While they can occur, they are relatively rare compared to other types of childhood cancers.
Choice B reason: Osteosarcoma is a type of bone cancer that primarily affects children and young adults. However, it is not the most common type of cancer in children. Osteosarcoma typically occurs in the bones around the knee and upper arm.
Choice C reason: Leukemia is the most common type of cancer in children. It affects the blood and bone marrow and can cause symptoms such as fatigue, easy bruising, and frequent infections. There are different types of leukemia, with acute lymphoblastic leukemia (ALL) being the most common in children.
Choice D reason: Brain tumors are the second most common type of cancer in children, but they are not as prevalent as leukemia. Brain tumors can cause symptoms such as headaches, nausea, and vision problems.
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