A patient with multiple myeloma develops confusion, polyuria, constipation, and a serum calcium of 13.5 mg/dL. What is the initial treatment priority?
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A
Administer oral calcium supplements to correct the imbalance
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B
Begin aggressive IV normal saline hydration to promote calciuresis
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C
Administer loop diuretics without IV fluids
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D
Initiate bisphosphonate therapy as the first intervention