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

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) or pelvis, the patient is instructed to have a full bladder.
The distended bladder serves as an 'acoustic window,' creating a clear path for sound waves to visualize the bladder itself and other pelvic organs.
A full bladder also displaces gas-filled bowel loops, which would otherwise scatter the ultrasound waves and obscure the view of the urinary tract.

Option A: This is incorrect because specific preparation (a full bladder) is necessary to obtain clear, diagnostic-quality images of the lower urinary tract and pelvic organs.
Option C: Fasting is not the primary requirement for a KUB or pelvic ultrasound. The main goal is bladder distention, not an empty stomach.
Option D: Standard diagnostic ultrasound does not use oral or IV contrast solutions. Ultrasound relies on sound waves reflecting off tissues.

Visual 1: Diagram: An illustration showing how a full bladder pushes the intestines upward and provides a clear acoustic window for the ultrasound probe to visualize the bladder, ureters, and uterus/prostate.

Clinical Relevance

Nursing practice connection: Use the key finding related to Patient preparation for pelvic/KUB ultrasound to guide bedside assessment, documentation, and the next nursing action.
A nurse's primary role includes providing clear pre-procedure instructions. Incorrect preparation can lead to non-diagnostic images, delaying diagnosis and treatment, and requiring the patient to repeat the scan.
Patient education is key. The nurse should explain why a full bladder is needed and instruct the patient to drink a specific amount of water (e.g., 1 liter) about an hour before the appointment and not to urinate.
What if the patient is NPO (nothing by mouth) for another potential procedure? The nurse must clarify with the provider. The ultrasound may need to be rescheduled, or IV hydration might be ordered to help fill the bladder without oral intake.

How to Approach the Question

First, analyze the patient's symptoms: 'unilateral flank pain and abdominal pain' strongly suggests a problem within the urinary system (kidneys, ureters, bladder).
Next, identify the procedure: 'ultrasound'. This is a common, non-invasive first-line imaging test for these symptoms.
Connect the anatomical location (lower abdomen/pelvis) to the specific ultrasound preparation required. Recall that visualizing pelvic structures with ultrasound requires a full bladder to serve as an acoustic window.
Evaluate each option based on this core knowledge. Eliminate options that relate to other types of imaging (contrast for CT/IVP) or different body areas (fasting for upper abdomen), leaving the most logical answer.

Concept Tested & Keywords

Concept Tested: Patient preparation for pelvic/KUB ultrasound
Stem keywords: unilateral flank pain, abdominal pain, ultrasound, preparation
Lead-in keywords: correct
Clinical cues: Unilateral flank pain and abdominal pain suggest a renal or ureteric issue, guiding the choice of imaging and preparation.

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