NCLEX · Pharmacological Therapies

A client is to receive an intramuscular (IM) injection in the ventrogluteal site. Why is the ventrogluteal site preferred over the dorsogluteal site for IM injections?

Correct answer

The ventrogluteal site is free of major nerves and blood vessels (away from the sciatic nerve), has a thick muscle mass, and is considered the safest IM injection site for adults and children

  1. A It is easier to reach
  2. B It is less painful only because it is smaller
  3. C It allows larger injection volumes
  4. D The ventrogluteal site is free of major nerves and blood vessels (away from the sciatic nerve), has a thick muscle mass, and is considered the safest IM injection site for adults and children

Why this is the answer

VENTROGLUTEAL SITE — THE PREFERRED IM SITE:

Location: Place the palm on the greater trochanter, index finger on the anterior superior iliac spine, middle finger toward the iliac crest, inject in the V between fingers.

Advantages: Free of major nerves and blood vessels — notably AWAY from the SCIATIC NERVE (the danger of the older dorsogluteal site); thick gluteus medius and minimus muscle; safe for adults and children > 7 months; accommodates up to 3 mL; DORSOGLUTEAL (older site, now discouraged): Risk of sciatic nerve injury and inadvertent intravascular injection; no longer recommended as first choice.

Other im sites: Deltoid (small volume ≤1 mL, vaccines); vastus lateralis (preferred for infants, large muscle).

Im technique: 90-degree angle, appropriate needle length for muscle depth, aspiration is no longer routinely recommended for vaccines (CDC guidance) but may be used per facility policy for other IM meds; LPN role: select the safest site, use correct technique, rotate sites.

Source: NCLEX-PN Physiological — Pharmacology, Ventrogluteal IM Site

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About this topic: Pharmacological Therapies

Pharmacological therapies questions cover medication administration, dosage calculation, the rights of medication administration, common drug classes and their side effects, and when to hold a medication and report. This is one of 18 PN: Physiological Integrity questions on pharmacological therapies, each with a full explanation on a single study page.

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