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?

Choice A rationale Obtaining a culture before analgesia is generally good practice if infection is suspected, but it is not the priority for renal colic. In renal colic, the immediate needs are pain management and stone recovery. Renal colic pain is often rated as 10 out of 10, necessitating rapid intervention. While white blood cells in urine might suggest infection, culture results take 48 to 72 hours and do not address the acute mechanical obstruction caused by the stone. Choice B rationale Frequent ambulation is sometimes suggested to help stones pass, but it is contraindicated during the acute phase of severe pain. The patient must be stabilized and pain-free before being encouraged to walk around. Ambulation does not guarantee stone movement and may increase the risk of falls if the patient is experiencing intense, dizzying pain or is under the influence of strong narcotics or nonsteroidal anti-inflammatory drugs like ketorolac administered for the severe renal colic symptoms. Choice C rationale Monitoring for fever is an important assessment for potential pyelonephritis or urosepsis, which are complications of urinary tract obstructions. However, monitoring is a passive action that does not address the immediate crisis of renal colic. A temperature above 100.4 degrees Fahrenheit or 38 degrees Celsius would indicate an inflammatory or infectious process. While vital, this does not take precedence over the active interventions required to manage the patient's acute pain and to facilitate the physical diagnosis. Choice D rationale Ketorolac is a nonsteroidal anti-inflammatory drug that inhibits prostaglandin synthesis, effectively reducing ureteral inflammation and smooth muscle spasms associated with renal colic. This provides significant pain relief. Straining all urine is essential for capturing the calculus for chemical analysis. Identifying the stone composition (such as calcium oxalate or uric acid) is the only way to determine the definitive cause of the colic and to develop a long-term prevention plan for the patient.