The Z-track technique of intramuscular injection is used to:

Appeared in: GMCH - 2016

Explanation

The Z-track technique is specifically designed to seal medication deep within a large muscle.
It creates a zigzag path that closes when the skin is released after injection.
This mechanism prevents the backward leakage (tracking) of the medication into the subcutaneous tissue.
Preventing leakage is essential to avoid irritation, inflammation, and staining of the subcutaneous and skin layers, especially with certain medications like iron dextran.

Option A: Avoiding nerves and major blood vessels is a function of correct injection site selection and anatomical knowledge, not the Z-track technique itself.
Option C: The primary purpose of the Z-track method is not to reduce pain, although it may contribute to less post-injection discomfort by preventing tissue irritation from leaked medication.
Option D: The Z-track method does not primarily address bleeding. Applying firm pressure to the site after needle withdrawal is the standard procedure to promote hemostasis and prevent hematoma formation.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Z-track intramuscular injection technique as background academic context rather than a clinical decision trigger.
The Z-track method is a mandatory skill for administering irritating medications (e.g., iron dextran, hydroxyzine, certain antipsychotics) to prevent painful sterile abscesses and skin discoloration.
Proper execution of this technique demonstrates nursing competence and directly impacts patient safety and comfort.
What if? If the Z-track technique is NOT used for an iron dextran injection, the iron can leak into the subcutaneous tissue, causing a permanent, dark brown stain on the skin and significant tissue irritation.

How to Approach the Question

First, identify the core concept of the question, which is the 'Z-track technique' for IM injections.
Recall the specific purpose of this technique. The name 'Z-track' itself is a clue, suggesting a non-linear path.
Evaluate each option based on the primary goal of the technique.
Option A relates to site selection, not the injection method itself.
Option B describes sealing the medication to prevent leakage, which directly matches the known purpose of the Z-track method.
Options C and D describe general goals of good injection practice (reducing pain and bleeding) but are not the specific, primary reason for the Z-track method.

Concept Tested & Keywords

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E6 Nursing Fundamentals Potter Perry 12e Part 3 p. 174-176

E6 Nursing Fundamentals Taylor p. 862-864

Practise the full GMCH - 2016

Attempt every question from this paper in a timed mock, then review the full solution for each one.