In a patient with hyponatremia who has low serum osmolality, high urine osmolality, and high urine sodium, what is the first-line fluid management and the safe correction rate?

• A. Hypertonic saline is first-line
• B. Normal saline bolus
• C. Fluid restriction is first-line; correct sodium slowly, not more than 6-8 mEq/L per 24 hours to avoid osmotic demyelination
• D. Free water administration

Answer: (C)