Treatment of acute hypercalcemia-
**Core Concept**
Hypercalcemia is a condition characterized by elevated serum calcium levels, which can be caused by various factors including hyperparathyroidism, malignancy, and vitamin D toxicity. Acute hypercalcemia requires immediate treatment to prevent severe complications such as renal failure and cardiac arrest.
**Why the Correct Answer is Right**
The initial treatment of acute hypercalcemia involves hydration with intravenous fluids to promote calcium excretion. Loop diuretics like furosemide can be used in conjunction with hydration to enhance calcium clearance. Additionally, bisphosphonates such as pamidronate or zoledronate can be administered to inhibit osteoclast-mediated bone resorption and reduce calcium levels. In severe cases, calcitonin can be used to rapidly lower calcium levels by promoting calcium deposition into bone and increasing its excretion in the urine.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not address the underlying pathophysiology of hypercalcemia.
**Option B:** This option is incorrect as it does not provide a comprehensive treatment approach for acute hypercalcemia.
**Option C:** This option is incorrect as it is not a primary treatment for acute hypercalcemia.
**Clinical Pearl / High-Yield Fact**
In the treatment of acute hypercalcemia, it is essential to monitor serum calcium levels closely and adjust therapy accordingly. Bisphosphonates can cause a rebound effect if calcium levels drop too low, so close monitoring is crucial to avoid hypocalcemia.
**Correct Answer: D. Bisphosphonates like pamidronate or zoledronate are used to treat acute hypercalcemia.**