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 A
Explanation
Choice A reason: Micturition, or urination, is stimulated by the filling of the bladder. As the bladder fills with urine, stretch receptors in the bladder wall are activated. These receptors send signals to the brain, which then triggers the urge to urinate. When the bladder is full enough, the brain sends signals to the muscles of the bladder to contract and to the urethral sphincter to relax, allowing urine to be expelled from the body.
Choice B reason: Segmental movement refers to the rhythmic contractions and relaxations of segments of the intestine that help in the movement of contents along the gastrointestinal tract. It is not related to the process of micturition.
Choice C reason: Rectal filling is associated with the defecation reflex, not micturition. When the rectum fills with feces, stretch receptors in the rectal walls are activated, leading to the urge to defecate. This process is separate from the mechanisms involved in urination.
Choice D reason: Mass movements are large, strong contractions of the colon that move fecal matter toward the rectum, facilitating defecation. They are not involved in the process of micturition.
Correct Answer is C
Explanation
Choice A reason: Swelling of the feet, or peripheral edema, can be associated with ascites, but it is not a primary measurement used to diagnose ascites. Peripheral edema can occur due to various conditions, including heart failure, kidney disease, and venous insufficiency. It does not specifically indicate the presence of ascites, which is the accumulation of fluid in the abdominal cavity.
Choice B reason: Urine output is an important measure of renal function and fluid balance but is not directly used to diagnose ascites. Changes in urine output can indicate kidney function and fluid status but do not specifically assess fluid accumulation in the abdomen.
Choice C reason: Abdominal girth measurement is a key method used to assess and monitor ascites. Measuring the circumference of the abdomen can help quantify the amount of fluid accumulation. An increase in abdominal girth over time is a strong indicator of ascites and can be used to track the progression or resolution of the condition. This method is simple, non-invasive, and effective in evaluating the severity of ascites.
Choice D reason: Chest circumference is not used to diagnose ascites. While changes in chest circumference can indicate respiratory or thoracic conditions, they do not provide information about fluid accumulation in the abdominal cavity. Ascites is specifically related to the abdomen, and measurements of abdominal girth are more relevant and informative in this context.
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