A patient in the diuretic phase of acute kidney injury is experiencing polyuria. Which nursing intervention is essential during this phase?

Rationale: A. Administering diuretics is not routinely indicated during the diuretic phase of acute kidney injury (AKI). The polyuria in this phase is due to the kidney’s recovering ability to excrete fluid, not necessarily a need for additional diuretics. Unnecessary diuretics can worsen electrolyte imbalances. B. Restricting fluid intake is appropriate during the oliguric phase when fluid overload is a concern. During the diuretic phase, the patient is losing large volumes of urine, and fluid restriction could worsen dehydration and electrolyte disturbances. Fluid intake should be carefully balanced, often replacing losses to maintain hydration. C. Monitoring electrolytes closely is essential during the diuretic phase. Polyuria can lead to significant losses of sodium, potassium, and other electrolytes, placing the patient at risk for hyponatremia, hypokalemia, and other imbalances. Frequent monitoring allows timely replacement and prevents complications such as arrhythmias, muscle weakness, or neurological symptoms. D. Increasing protein intake may be beneficial in the recovery phase to support healing, but it is not the most urgent intervention during the diuretic phase. Electrolyte management and fluid balance take priority to prevent acute complications.