If the patient’s fractional excretion of sodium is 0.87%, calculate the patient’s urine creatinine concentration. Which therapeutic measure should be considered “first and foremost” and may be very...

If the patient’s fractional excretion of sodium is 0.87%, calculate the patient’s urine creatinine concentration.

Which therapeutic measure should be considered “first and foremost” and may be very beneficial in reversing the signs of acute renal failure?