A patient with chronic renal failure has a urine output of 620 mL in 24 hours, periorbital edema, and crackles heard in all lung fields. Which nursing intervention should be prioritized to prevent further complications?

Encourage increased oral fluid intake to increase urine output and reduce edema.

Position the patient in semi-Fowler's position to ease breathing and reduce pulmonary congestion.

Provide frequent repositioning to prevent pressure ulcers due to edema.

Administer prescribed diuretics immediately without monitoring vital signs.