A 55-year-old female presents with symptoms of fatigue, muscle weakness, and depression. Laboratory results reveal elevated calcium levels and increased parathyroid hormone (PTH) levels. Which of the following is the most likely cause of her hyperparathyroidism?
Adenoma of the parathyroid gland.
Thyroid carcinoma.
Vitamin D deficiency.
Chronic kidney disease.
The Correct Answer is A
Choice A Reason:
An adenoma of the parathyroid gland is the most common cause of primary hyperparathyroidism. This benign tumor leads to the overproduction of parathyroid hormone (PTH), which in turn causes elevated calcium levels in the blood. The excessive PTH secretion disrupts the normal calcium balance, leading to symptoms such as fatigue, muscle weakness, and depression. Parathyroid adenomas account for approximately 80% of primary hyperparathyroidism cases.
Choice B Reason:
Thyroid carcinoma is a type of cancer that originates in the thyroid gland, not the parathyroid glands. While thyroid carcinoma can cause various symptoms, it does not typically lead to elevated PTH levels or hyperparathyroidism. Therefore, it is not the most likely cause of the patient’s condition.
Choice C Reason:
Vitamin D deficiency can lead to secondary hyperparathyroidism, where low levels of vitamin D cause decreased calcium absorption, prompting the parathyroid glands to produce more PTH to maintain calcium levels. However, this condition is usually associated with low or normal calcium levels, not elevated calcium levels as seen in this patient. Therefore, it is not the most likely cause of her hyperparathyroidism.
Choice D Reason:
Chronic kidney disease (CKD) can also cause secondary hyperparathyroidism due to impaired kidney function, which affects calcium and phosphate balance and vitamin D metabolism. However, similar to vitamin D deficiency, CKD-related hyperparathyroidism typically presents with low or normal calcium levels rather than elevated levels. Thus, it is not the most likely cause in this scenario.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C"]
Explanation
Choice A Reason:
Administering diuretics to increase urine output is not appropriate in this scenario. Diuretics would exacerbate dehydration and further increase serum sodium levels by promoting additional water loss. This approach would worsen the patient’s condition rather than improve it.
Choice B Reason:
Administering desmopressin is a suitable intervention for this patient. Desmopressin is a synthetic analog of vasopressin (antidiuretic hormone) and is used to treat conditions like diabetes insipidus, which can cause symptoms such as excessive thirst, frequent urination, and dehydration. Desmopressin helps to reduce urine output and correct the imbalance of fluids and electrolytes.
Choice C Reason:
Administering intravenous hypotonic saline is appropriate for managing high serum sodium levels and dehydration. Hypotonic saline helps to lower serum sodium levels by diluting the blood and rehydrating the patient. This intervention addresses both the dehydration and the electrolyte imbalance effectively.
Choice D Reason:
Restricting fluid intake to reduce urine output is not appropriate in this case. Fluid restriction would worsen dehydration and could lead to further complications. The patient needs adequate fluid replacement to correct the dehydration and normalize serum sodium levels.
Choice E Reason:
Administering hypertonic saline is not suitable for this patient. Hypertonic saline would increase serum sodium levels further, exacerbating the hypernatremia. This intervention would be counterproductive and could lead to severe complications.
Correct Answer is B
Explanation
Choice A Reason:
Caffeine-rich beverages are not recommended for patients with Meniere’s disease. Caffeine can exacerbate symptoms such as vertigo and tinnitus by increasing the fluid pressure in the inner ear. Therefore, avoiding caffeine is generally advised to help manage the condition.
Choice B Reason:
A low-sodium diet is an appropriate treatment for Meniere’s disease. Reducing sodium intake helps decrease fluid retention in the body, including the inner ear, which can alleviate symptoms such as vertigo, tinnitus, and hearing loss. This dietary modification is a cornerstone of managing Meniere’s disease and can significantly improve the patient’s quality of life.
Choice C Reason:
High-intensity interval training (HIIT) is not suitable for patients with Meniere’s disease. Intense physical activity can trigger vertigo attacks and worsen balance issues. Patients are generally advised to engage in moderate, low-impact exercises that do not provoke symptoms.
Choice D Reason:
Prolonged bed rest is not an appropriate treatment for Meniere’s disease. While rest may be necessary during acute vertigo attacks, long-term bed rest can lead to deconditioning and other health issues. It is important for patients to maintain a balance between rest and activity to manage their symptoms effectively.
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