In addition to the dorsogluteal and ventrogluteal muscles, which of these sites can safely be used for intramuscular injections?

Deltoid and vastus lateralis

Upper chest and abdomen

Inner forearm and scapular area of the back

Lower leg

Answer and Explanation

The Correct Answer is A

Choice A reason: Deltoid and vastus lateralis are large muscles with good vascularity; they safely absorb IM injections, minimizing nerve damage or tissue irritation risks.

Choice B reason: Chest and abdomen lack sufficient muscle mass for IM; these are subcutaneous or IV sites, risking poor absorption or injury if used intramuscularly.

Choice C reason: Forearm and scapula are too thin or bony; IM injections here risk nerve or bone damage, lacking the muscle bulk needed for safe drug delivery.

Choice D reason: Lower leg (e.g., calf) has small muscles and major vessels; IM use risks vascular injury or slow absorption, making it an unsafe injection site.

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Correct Answer is A

Explanation

Choice A reason: Blood aspiration indicates vascular entry; discarding prevents IV administration of a drug meant for another route, avoiding rapid absorption risks or contamination.

Choice B reason: Giving despite blood risks unintended IV delivery; drugs like IM injections aren’t formulated for this, potentially causing toxicity or embolism.

Choice C reason: Changing the needle doesn’t address blood-mixed medication; it remains unsafe for injection, as the dose is compromised and potentially contaminated.

Choice D reason: Omitting skips treatment unnecessarily; the issue is procedural, not the order, and restarting ensures the patient receives the intended therapy safely.

A. 1 mL B. 1.5 mL C. 2 mL D. 2.5 mL

Correct Answer is B

Explanation

Choice A reason: 1 mL gives 50 mg; this underdoses the 75 mg order, reducing Vistaril’s sedative effect, risking inadequate anxiety relief for the patient.

Choice B reason: 1.5 mL is correct; 75 mg divided by 50 mg/mL equals 1.5 mL, delivering the precise IM dose for effective anxiolytic action safely.

Choice C reason: 2 mL provides 100 mg; this overdoses Vistaril, risking excessive sedation or hypotension, exceeding the ordered therapeutic amount unnecessarily.

Choice D reason: 2.5 mL yields 125 mg; this far exceeds 75 mg, amplifying side effects like drowsiness or respiratory depression, unsafe for anxiety management.

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In addition to the dorsogluteal and ventrogluteal muscles, which of these sites can safely be used for intramuscular injections?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which nursing action is appropriate when pulling the plunger of the syringe back prior to administering medication and blood is aspirated in the syringe?

Correct Answer is A

Explanation

Vistaril 75 mg IM is ordered for anxiety. Available: 50 mg/mL. How many milliliters will the nurse administer?

Correct Answer is B

Explanation

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