A 72-year-old male with a history of heart failure is admitted for worsening shortness of breath. His serum sodium is 128 mEq/L, serum osmolality is 265 mOsm/kg, and he has gained 4 kg over the past week. He reports his urine has been very dark and his legs are "puffy." Which intervention is most appropriate for the nurse to implement first?
- Restrict fluid intake as prescribed and monitor intake and output every shift.
- Encourage increased oral fluid intake to correct the hyponatremia.
- Administer a hypertonic saline bolus immediately per standing orders.
- Elevate the head of the bed to 15 degrees and apply compression stockings.