A 45-year-old female patient presents with symptoms of tingling in the fingers, muscle cramps, and fatigue. Her laboratory results show low serum calcium, low parathyroid hormone (PTH) levels, and elevated serum phosphate levels. Based on these lab results, which of the following is the most likely diagnosis?
Primary hyperparathyroidism
Chronic kidney disease
Vitamin D deficiency
Hypoparathyroidism
The Correct Answer is D
Choice A Reason:
Primary hyperparathyroidism is characterized by elevated PTH levels, which lead to increased serum calcium levels and decreased serum phosphate levels. The patient’s lab results show low PTH and low serum calcium, which are not consistent with primary hyperparathyroidism.
Choice B Reason:
Chronic kidney disease (CKD) can cause disturbances in calcium and phosphate metabolism, but it typically presents with elevated PTH levels due to secondary hyperparathyroidism. The patient’s low PTH levels make CKD an unlikely diagnosis in this context.
Choice C Reason:
Vitamin D deficiency can lead to low serum calcium levels, but it usually results in elevated PTH levels as the body attempts to compensate for the low calcium. The patient’s low PTH levels do not align with a diagnosis of vitamin D deficiency.
Choice D Reason:
Hypoparathyroidism is characterized by low serum calcium, low PTH levels, and elevated serum phosphate levels. This condition occurs when the parathyroid glands do not produce enough PTH, leading to the observed lab results and symptoms such as tingling, muscle cramps, and fatigue. The patient’s lab results are consistent with hypoparathyroidism.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
Increased appetite is not typically associated with anemia. Anemia generally leads to symptoms related to decreased oxygen-carrying capacity of the blood, such as fatigue, weakness, and shortness of breath. Increased appetite is more commonly linked to other conditions, such as hyperthyroidism or certain metabolic disorders.
Choice B Reason:
Fatigue is a common and significant symptom of anemia. When hemoglobin levels are low, the body’s tissues do not receive adequate oxygen, leading to feelings of tiredness and exhaustion. This is because hemoglobin is responsible for transporting oxygen from the lungs to the rest of the body. In anemia, the reduced oxygen delivery results in decreased energy levels and persistent fatigue.
Choice C Reason:
Weight gain is not typically associated with anemia. In fact, some forms of anemia, such as those caused by chronic diseases or malnutrition, may lead to weight loss rather than gain. Weight gain can be associated with other health issues, such as hypothyroidism or fluid retention, but not directly with anemia.
Choice D Reason:
Hypertension is not a common manifestation of anemia. Anemia usually leads to symptoms like pallor, shortness of breath, and fatigue due to the reduced oxygen-carrying capacity of the blood. Hypertension, or high blood pressure, is more commonly associated with cardiovascular diseases, kidney disorders, or endocrine conditions.
Correct Answer is A
Explanation
Choice A Reason:
Administering an alpha-adrenergic blocker is the highest priority intervention for a patient with pheochromocytoma and severe hypertension. Pheochromocytoma causes excessive secretion of catecholamines, leading to severe hypertension. Alpha-adrenergic blockers help to control blood pressure by blocking the effects of these catecholamines, thereby reducing vasoconstriction and lowering blood pressure. This intervention is crucial to prevent hypertensive crises and associated complications such as stroke or myocardial infarction.
Choice B Reason:
Administering intravenous fluids to maintain hydration is important but not the highest priority. While maintaining hydration is essential, it does not directly address the severe hypertension caused by pheochromocytoma. Intravenous fluids can help support overall patient stability but do not specifically target the underlying cause of the hypertension.
Choice C Reason:
Monitoring blood glucose levels every 4 hours is a necessary intervention, especially since pheochromocytoma can cause hyperglycemia due to increased catecholamine levels. However, this intervention is not the highest priority compared to controlling the severe hypertension, which poses a more immediate threat to the patient’s health.
Choice D Reason:
Preparing the patient for immediate surgery to remove the tumor is a critical step in the long-term management of pheochromocytoma. However, surgery is not typically performed until the patient’s blood pressure is stabilized with medications such as alpha-adrenergic blockers. Therefore, while surgery is essential, it is not the immediate priority in the acute management of severe hypertension.
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