Neuropathy is nerve degeneration that results in delayed nerve conduction and impaired sensory function due to:
Thickening, sclerosis, obstruction, and ischemia of the vessels that supply nerve fibers.
Hyperglycemia
Thickening of blood.
Hypoglycemia
The Correct Answer is A
Choice A reason: Neuropathy, particularly diabetic neuropathy, is often caused by the thickening, sclerosis (hardening), obstruction, and ischemia (reduced blood flow) of the small blood vessels that supply the nerves (vasa nervorum). This can lead to nerve degeneration, delayed nerve conduction, and impaired sensory function. Over time, high blood glucose levels can damage these small blood vessels, leading to neuropathy.
Choice B reason: While hyperglycemia (high blood glucose levels) is a major factor in the development of diabetic neuropathy, it is the resulting damage to the blood vessels supplying the nerves that directly causes the nerve degeneration and delayed conduction.
Choice C reason: Thickening of blood is not a direct cause of neuropathy. Neuropathy is more directly related to the damage and obstruction of the small blood vessels that supply the nerves.
Choice D reason: Hypoglycemia (low blood glucose levels) does not cause neuropathy. In fact, the acute effects of hypoglycemia are typically neurological symptoms such as confusion, seizures, and loss of consciousness. Chronic nerve damage, as seen in neuropathy, is usually due to prolonged hyperglycemia and its effects on blood vessels.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: NGT (nasogastric tube) is used for enteral feeding, not parenteral nutrition. Enteral feeding involves delivering nutrients directly to the stomach or small intestine, bypassing the need for eating. This method is suitable for patients who have a functioning digestive system but cannot eat orally. Parenteral nutrition, on the other hand, involves delivering nutrients directly into the bloodstream.
Choice B reason: Oral administration of nutrition involves consuming food or nutrients by mouth. This method is suitable for individuals who can eat and digest food normally. Parenteral nutrition bypasses the digestive system altogether and delivers nutrients directly into the bloodstream, making oral administration inappropriate for TPN.
Choice C reason: Central Line is the correct answer because Total Parenteral Nutrition (TPN) requires delivery of nutrients directly into a central vein, typically the superior vena cava. This is because TPN solutions are highly concentrated and can irritate smaller veins, leading to complications such as phlebitis. A central line allows for the safe administration of TPN, ensuring that the high osmolarity solution is rapidly diluted by the large volume of blood in the central veins.
Choice D reason: Peripheral line administration is used for Peripheral Parenteral Nutrition (PPN), not TPN. PPN can be delivered through a peripheral vein because it is less concentrated than TPN. Using a peripheral line for TPN is not appropriate due to the risk of complications from the high osmolarity of the TPN solution.
Correct Answer is D
Explanation
Choice A reason: Lispro (Insulin lispro) does not primarily act to reduce insulin resistance. Instead, it is a rapid-acting insulin analog used to manage blood glucose levels in people with diabetes.
Choice B reason: Lispro does not prevent the formation of glucose. Its main function is to help control blood sugar levels by replacing the insulin that the body is not producing enough of.
Choice C reason: Lispro does not decrease the body's need for glucose in body cells. Instead, it helps facilitate the uptake of glucose into cells by mimicking the action of natural insulin.
Choice D reason: Lispro acts as an insulin replacement. It is a fast-acting insulin analog that helps control blood sugar levels by mimicking the body's natural insulin, which is essential for the metabolism of glucose.
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