NORCET -4 , 2023: Which of the following is best technique for urine sample collection in a patient who is having indwelling ur…

NORCET -4 , 2023

Medical & Surgical Nursing

Medium

Appeared in: NORCET -4 , 2023

Explanation

The correct technique is to aspirate a fresh urine sample from the designated sampling port on the catheter tubing using a sterile syringe.
This method maintains a closed drainage system, which is the most critical principle for preventing Catheter-Associated Urinary Tract Infections (CAUTI).
The sample obtained is fresh urine directly from the bladder, ensuring an accurate representation for analysis, unlike the stagnant, potentially contaminated urine in the drainage bag.

Option A: This refers to the timing of collection (first void of the day) to get a concentrated sample, not the physical technique required to obtain a sample from a closed catheter system.
Option B: This action involves disconnecting the catheter from the drainage tube, which breaks the sterile, closed system. This is a major breach of infection control protocol and is strictly contraindicated.
Option D: This is an invasive procedure where a needle is inserted through the abdominal wall into the bladder. It is completely unnecessary and overly invasive for a patient who already has an indwelling catheter providing access.

Clinical Relevance

Nursing practice connection: Use the key finding related to Sterile urine specimen collection from an indwelling urinary catheter to guide bedside assessment, documentation, and the next nursing action.
Adhering to the correct sterile technique for specimen collection is a primary nursing responsibility to prevent CAUTI, a common, costly, and potentially dangerous healthcare-associated infection.
A nurse must never collect a urine sample for culture from the drainage bag. The urine is old and bacteria multiply rapidly, which will lead to false-positive results and could result in the patient receiving unnecessary or incorrect antibiotics.
What if? If the catheter tubing has no urine in it, the nurse should clamp the tube just below the port for no more than 30 minutes. This allows fresh urine from the bladder to accumulate for collection without causing excessive backflow or discomfort.

How to Approach the Question

First, identify the core task: obtaining a urine sample from a patient with an indwelling catheter.
Recall the most important principle of indwelling catheter care: maintaining a closed, sterile system to prevent infection (CAUTI).
Evaluate each option against this principle. Option B (disconnecting the catheter) directly violates it and must be eliminated as unsafe.
Differentiate between the 'what' (the sample) and the 'how' (the technique). Option A (first morning) is about timing, not the method of collection, making it less relevant to the 'technique' asked in the question.
Compare the remaining options based on invasiveness and logic. Option D (suprapubic aspiration) is highly invasive and illogical since a non-invasive access point (the catheter) already exists.
Conclude that Option C (aspirating from the catheter's port) is the only method that is safe, uses the existing access correctly, and maintains the sterile closed system.

Concept Tested & Keywords

Concept Tested: Sterile urine specimen collection from an indwelling urinary catheter.
Stem keywords: urine sample collection, indwelling urinary catheter, technique
Lead-in keywords: best
Negative lead-in flag: false

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