Which route preferred for second dose of DPT?

Appeared in: NORCET 2 - 2021 (shift-1)

Explanation

The second dose of the DPT vaccine is administered during infancy (around 10 weeks of age).
The vastus lateralis muscle, located on the anterolateral thigh, is the largest, most developed, and therefore safest muscle for intramuscular injections in infants.
Using this site minimizes the risk of injury to major nerves and blood vessels, which are not located in this area.
This muscle can safely accommodate the volume of the DPT vaccine, ensuring proper absorption and immune response.

Option B: The deltoid muscle is small and underdeveloped in infants, making it an unsuitable and unsafe site for IM injections in this age group.
Option C: The gluteal (dorsogluteal) site is contraindicated in infants and young children due to the high risk of sciatic nerve damage, which can cause pain and paralysis.
Option D: This is not a standard anatomical term for a muscle. It serves as a distractor by combining parts of correct terms ('lateralis' from vastus lateralis and 'femoris' from the femur bone).

Clinical Relevance

Nursing practice connection: Knowing Pediatric intramuscular injection sites for vaccination helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Correct injection site selection is a fundamental nursing responsibility that ensures patient safety, prevents complications like nerve damage or abscesses, and promotes optimal vaccine efficacy.
A nurse must always perform a 'five rights' check and also assess the patient's age, muscle development, and vaccine properties before administration.
What if? If the patient was a 7-year-old child coming for a DPT booster, the deltoid muscle would be a suitable and often preferred site, as it is typically well-developed by this age.

How to Approach the Question

First, identify the key information in the question: the vaccine (DPT), the dose (second), and the required action (identify the preferred route).
Recall the national immunization schedule to determine the patient's age. The second DPT dose is given at 10 weeks, meaning the patient is an infant.
Access your knowledge of pediatric anatomy and safe injection practices. For infants, the vastus lateralis muscle is the recommended site for IM injections.
Evaluate the options provided. 'Vastus lateralis' directly matches the recommended site.
Systematically eliminate the incorrect options by recalling their contraindications: Deltoid is too small in infants, Gluteal carries a risk of sciatic nerve injury, and 'Lateralis femoris' is an anatomically incorrect term.

Concept Tested & Keywords

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E6 Nursing Fundamentals Taylor p. 861-863

E6 Pharmacology Nursing Lilley 11e Part 1 p. 138-140

E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart C (pp 404-604 of 604) p. 126-128

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.