NORCET 2 - 2021 (shift-1)
Medical & Surgical Nursing
Easy
The intraosseous route excludes which site?
Appeared in: NORCET 2 - 2021 (shift-1)
Explanation
- The median clavicle is not an approved site for intraosseous (IO) access.
- This location is anatomically dangerous due to its close proximity to vital structures, including the subclavian artery, subclavian vein, and the apex of the lung.
- Attempting IO access at the median clavicle poses a high risk of life-threatening complications such as pneumothorax or severe hemorrhage.
- The clavicle's structure is not ideal for IO access compared to the large, accessible marrow cavities of long bones.
Why Other Options Were Wrong
- Option A: The distal tibia is a standard and commonly used site for IO access in both pediatric and adult patients.
- Option B: The proximal tibia is the most common and preferred site for IO access, especially in children, due to its wide, flat surface and easily identifiable landmarks.
- Option D: The distal femur is an accepted IO access site, particularly for infants and young children when tibial sites are unavailable.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Contraindications and appropriate sites for intraosseous (IO) access as background academic context rather than a clinical decision trigger.
- Nurses must be able to rapidly identify correct anatomical landmarks for IO insertion in an emergency and know the contraindications to prevent patient harm.
- A key nursing responsibility is to monitor the IO site for complications such as extravasation (fluid leaking into surrounding tissue), which can lead to compartment syndrome, infection (osteomyelitis), or fracture.
- What if? If a patient has a fracture in the right tibia, both the proximal and distal tibia on that leg are contraindicated for IO access. The nurse should anticipate the need to use an alternative site on the contralateral leg or another approved site like the humerus or femur.
How to Approach the Question
- First, identify the core of the question: it's asking for a site that is NOT used for intraosseous (IO) access. This is a negative-framing question.
- Next, recall the purpose of IO access: to gain rapid vascular access through the bone marrow in emergencies.
- Systematically review each option, mentally checking if it is a known, approved IO site.
- Option A (Distal tibia) and Option B (Proximal tibia) are very common IO sites. Eliminate them.
- Option D (Femur) is also a known IO site, especially in pediatrics. Eliminate it.
- This leaves Option C (Median clavicle). Consider the anatomy of this area: it's close to major blood vessels and the lungs. This makes it a high-risk, unsuitable location.
Concept Tested & Keywords
- Concept Tested: Contraindications and appropriate sites for intraosseous (IO) access.
- Stem keywords: intraosseous route, site
- Lead-in keywords: excludes
- Negative lead-in flag: The question asks which site is EXCLUDED, requiring identification of the non-standard site.
Question ID
QGfvynd19xYVf0Rqxb4Npe
Reference Book
E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 779-781
E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 615-617
Practise the full NORCET 2 - 2021 (shift-1)
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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