An elderly patient is found to have a serum sodium of 128 mEq/L with euvolemia. Which is the MOST appropriate initial management?
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A
Fluid restriction and identify underlying cause (e.g., SIADH)
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B
Rapid correction with 3% hypertonic saline
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C
Administer normal saline at 200 mL/hr
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D
Initiate furosemide diuresis