A patient admitted with severe flank pain diagnosed as renal colic has a urinalysis positive for microscopic hematuria. Which nursing action should be prioritized to ensure safe and effective care?

Obtain a urine culture before starting any analgesic medication to identify infection accurately.

Encourage the patient to ambulate frequently to help move the stone through the ureter.

Monitor for elevated temperature and report any fever to the provider immediately.

Administer prescribed IV ketorolac and strain all urine to check for passed stones.