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

1 mL

1.5 mL

2 mL

2.5 mL

Answer and Explanation

The Correct Answer is B

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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Correct Answer is ["A"]

Explanation

Choice A reason: Multiple pharmacies increase polypharmacy risk; 16 prescriptions across four sources raise chances of duplication or interactions, lacking centralized oversight.

Choice B reason: Five hypertension drugs signal polypharmacy; excessive medications for one condition heighten interaction risks, potentially causing adverse effects or toxicity.

Choice C reason: Daughter’s help with eyedrops aids compliance; this single-task assistance doesn’t inherently increase drug numbers or polypharmacy-related risks.

Choice D reason: Weekly warfarin tests monitor safety; this manages one drug’s effect, not indicating polypharmacy, but rather appropriate therapeutic oversight.

Choice E reason: Allergies affect drug choice, not quantity; this doesn’t contribute to polypharmacy, as it’s a sensitivity issue, not a medication count concern.

A. Administer the two insulins using different syringes and different sites of the body. B. Mix the Regular and NPH in the same syringe, drawing up the Regular first. C. Shake the bottles vigorously before drawing up the insulins. D. Mix the Regular and NPH in the same syringe, drawing up the NPH first.

Correct Answer is B

Explanation

Choice A reason: Separate syringes increase injection sites and patient discomfort; mixing is standard as Regular and NPH are compatible, optimizing insulin delivery efficiency and absorption.

Choice B reason: Drawing Regular (clear) before NPH (cloudy) in one syringe prevents contamination of the short-acting vial with the intermediate-acting insulin, ensuring accurate dosing and stability.

Choice C reason: Shaking insulin damages its structure; NPH requires gentle rolling to mix, while Regular needs no mixing, making vigorous shaking inappropriate for preparation.

Choice D reason: Drawing NPH first risks contaminating the Regular vial with NPH particles, altering its rapid action; the clear-to-cloudy sequence maintains insulin integrity and efficacy.

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

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Naxlex Comprehensive Predictor Exams

Which assessment finding indicates that the patient is at risk from polypharmacy? (Select all that apply.)

Correct Answer is ["A"]

Explanation

A patient is to receive insulin Regular and insulin NPH. How will the nurse draw up the insulins for administration?

Correct Answer is B

Explanation

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