NORCET 10 Prelims-2026: A patient with unilateral flank pain and abdominal pain is advised an ultrasound. What is the correct prepara…

NORCET 10 Prelims-2026

Medical & Surgical Nursing

Medium

Appeared in: NORCET 10 Prelims-2026

Explanation

For an ultrasound of the kidneys, ureters, and bladder (KUB), a full bladder is essential.
The fluid in the bladder acts as an 'acoustic window,' allowing the sound waves to travel without obstruction to the organs behind it.
A full bladder also pushes the gas-filled loops of the intestine up and away from the pelvic area.
This displacement is crucial because bowel gas can block the ultrasound waves and obscure the view of the urinary tract structures.
Therefore, instructing the patient to drink water and not urinate before the scan is the correct preparation to ensure a high-quality, diagnostic image.

Option A: While emergency ultrasounds may be done without ideal preparation, for a scheduled or non-emergent scan to investigate flank pain, preparation is required to obtain the best possible images and avoid the need for a repeat scan.
Option C: Fasting for 6-8 hours is the standard preparation for an upper abdominal ultrasound, which visualizes organs like the gallbladder, liver, pancreas, and spleen. It is not the primary requirement for a KUB ultrasound.
Option D: Contrast solutions (either oral or intravenous) are not used for standard diagnostic ultrasounds. Ultrasound works using sound waves, not X-rays.

Clinical Relevance

Nursing practice connection: Use the key finding related to Patient preparation for diagnostic ultrasound of the urinary system to guide bedside assessment, documentation, and the next nursing action.
A nurse's primary role in outpatient diagnostic testing is patient education. Clearly explaining the preparation instructions is crucial for a successful procedure and accurate diagnosis.
Improper preparation (e.g., an empty bladder) can lead to a non-diagnostic scan, resulting in delayed diagnosis, increased patient anxiety, and the need to reschedule the appointment.
What if? If the patient was diabetic and also required fasting for the scan (some departments request this to reduce bowel gas), the nurse must provide specific instructions on managing their blood sugar and medications during the fasting period to prevent hypoglycemia.

How to Approach the Question

First, identify the key elements in the question: the patient's symptoms (unilateral flank and abdominal pain) and the ordered test (ultrasound).
Correlate the symptoms with the likely anatomical area of interest. Flank pain points directly to the kidneys and ureters.
Recall the different types of ultrasound preparations. Differentiate between upper abdominal scans (requiring fasting) and pelvic/KUB scans (requiring a full bladder).
Select the preparation that matches the anatomical area. Since the kidneys and bladder are the focus, a full bladder is the most critical preparation.
Eliminate other options by associating them with different procedures: fasting for gallbladder/liver scans and contrast for CT/IVP scans.

Concept Tested & Keywords

Concept Tested: Patient preparation for diagnostic ultrasound of the urinary system.
Stem keywords: unilateral flank pain, abdominal pain, ultrasound, preparation
Lead-in keywords: correct
Clinical cues: The combination of flank pain and abdominal pain is a classic presentation for suspected kidney or ureter issues, such as stones (urolithiasis), guiding the choice of a KUB ultrasound.

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E6 Nursing Fundamentals Taylor p. 592-594

E6 Medicine Davidson Principles Practice 24e p. 409-411