Visual impairment may develop in people with diabetes, primarily because of:
Cataract development.
Development of exophthalmos
Abnormal metabolism in the lens.
Microvascular changes in the eye.
The Correct Answer is D
Choice A reason: Cataract development is a common issue in people with diabetes due to the high blood sugar levels that affect the lens of the eye. However, it is not the primary cause of visual impairment. Cataracts cause the lens to become cloudy, leading to blurred vision, but the impact is generally less severe compared to the microvascular complications of diabetes.
Choice B reason: Exophthalmos, or bulging of the eye, is not typically associated with diabetes. It is more commonly seen in conditions like Graves' disease, an autoimmune disorder affecting the thyroid. Therefore, while it is important to be aware of various conditions that can impact eye health, exophthalmos is not a primary complication of diabetes.
Choice C reason: Abnormal metabolism in the lens can contribute to the formation of cataracts, but it is not the main reason for diabetic visual impairment. The primary issue in diabetes-related visual impairment is damage to the small blood vessels in the retina, not just changes in the lens metabolism.
Choice D reason: Microvascular changes in the eye, particularly diabetic retinopathy, are the primary cause of visual impairment in people with diabetes. High blood sugar levels can damage the blood vessels in the retina, leading to leakage, swelling, and the formation of new, abnormal blood vessels. This can result in significant vision loss and even blindness if not properly managed. Regular eye examinations and control of blood glucose levels are crucial in preventing and managing diabetic retinopathy.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: While obesity can be associated with hypercholesterolemia, this condition primarily affects lipid levels and cardiovascular health rather than directly impairing insulin circulation.
Choice B reason: Obesity is not solely a result of high sugar intake. While diet plays a role, obesity involves a complex interplay of genetic, environmental, and lifestyle factors. High sugar intake can contribute to weight gain, but it is not the direct cause of obesity.
Choice C reason: Obesity releases fatty acids and cytokines, which interfere with insulin receptors. Adipose tissue in obese individuals releases pro-inflammatory cytokines and fatty acids that can cause insulin resistance by interfering with insulin signaling pathways.
Choice D reason: Obesity is not directly associated with a mutation of the MiR-21 gene. While genetic factors can contribute to obesity and type 2 diabetes, the primary mechanism involves metabolic and inflammatory pathways rather than specific gene mutations.
Correct Answer is B
Explanation
Choice A reason: Edema refers to the accumulation of fluid in the interstitial spaces of tissues, leading to swelling. While it involves fluid retention, it does not specifically describe fluid accumulation in the peritoneal cavity.
Choice B reason: Third spacing refers to the abnormal accumulation of fluid in areas where it is not normally found, such as the peritoneal cavity, pleural cavity, or pericardial sac. In the context of the peritoneal cavity, this condition is known as ascites, a type of third spacing.
Choice C reason: Blanching refers to the whitening of the skin when pressure is applied, which is often used as a sign to assess capillary refill time. It does not relate to fluid accumulation.
Choice D reason: Pitting edema refers to a type of edema where pressing on the swollen area leaves an indentation or "pit" that takes time to refill. While it is a type of fluid retention, it does not specifically describe fluid accumulation in the peritoneal cavity.
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