A client with renal calculi is experiencing hematuria and reports severe flank pain.
Which intervention should the nurse implement first?

Choice A rationale:

Reporting the 24-hour intake at the current infusion rate is not the most important finding to report to the healthcare provider in this case. It is essential to monitor intake and output, but a single report of the 24-hour intake is not as critical as other findings.

Choice B rationale:

Reporting a serum potassium level of 3.1 mEq/L (3.1 mmol/L) is the most important finding to report to the healthcare provider. The patient's potassium level is below the normal range, indicating hypokalemia. Hypokalemia can have serious cardiac and neuromuscular effects, including arrhythmias and muscle weakness. Prompt intervention, such as potassium supplementation or adjustment of IV fluids, is necessary to address this potentially life-threatening condition.

Choice C rationale:

Reporting a gastric output of 900 mL in the last 24 hours is significant and should be reported to the healthcare provider, but it is not as urgent as the low potassium level. Gastric output should be monitored to assess for signs of improvement or worsening, but hypokalemia takes precedence due to its immediate health risks.

Choice D rationale:

Reporting an increased blood urea nitrogen (BUN) is important for the overall assessment of the patient's renal function but is not the most critical finding in this scenario. The low potassium level is a more immediate concern and requires immediate attention.

Choice A rationale:

Obtaining a urine specimen for analysis is an important step in the assessment of the client with renal calculi. However, it is not the most immediate intervention when the client is experiencing severe flank pain and hematuria. Pain management should take precedence.

Choice B rationale:

This is the correct answer. Severe flank pain in a client with renal calculi is indicative of renal colic, which is typically excruciating. Administering a prescribed opioid analgesic is the priority to relieve the client's pain and distress.

Choice C rationale:

Straining the urine for the presence of stones is an essential nursing intervention to identify and collect any passed stones. However, it is not the most immediate action when the client is in severe pain. Pain management is the priority.

Choice D rationale:

Preparing the client for a prescribed computed tomography (CT) scan is an important diagnostic step to assess the location and size of the renal calculi. However, it is not the most immediate intervention when the client is in severe pain and distress. Pain management should come first.