The nurse prepares to administer promethazine 35 mg intramuscularly prescribed as needed for a client with cholecystitis who has severe nausea. The ampule label reads that the medication is available in 25 mg/mL. How many milliliters should the nurse administer?
Record your answer using one decimal place.
1
1.4
1.5
0.7
The Correct Answer is B
Choice A rationale: this corresponds with 25 mg which is lower than the prescribed amount.
Choice B rationale: To answer this question, we need to use the formula: volume (mL) = dose (mg) / concentration (mg/mL). We plug in the given values: volume (mL) = 35 mg / 25 mg/mL. We simplify the fraction: volume (mL) = 7/5. We convert the fraction to a
decimal: volume (mL) = 1.4. Therefore, the nurse should administer 1.4 mL of promethazine.
Choice C rationale: this corresponds with 37.5 mg which is too high.
Choice D rationale: this corresponds with 17.5 mg which is too low.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale: Bell's palsy is not caused by a bacterial infection; hence, antibiotics are not the primary treatment.
Choice B rationale: Corticosteroids like prednisone are often used to reduce inflammation and improve symptoms in Bell's palsy.
Choice C rationale: While vitamins can support overall health, they are not the primary treatment for Bell's palsy.
Choice D rationale: Surgery is not the primary treatment for Bell's palsy unless certain complications arise.
Correct Answer is D
Explanation
Choice A rationale: Symptoms and findings described align more with an acute, severe condition rather than a chronic one.
Choice B rationale: While cholecystitis can present with similar symptoms, the radiation of pain to the back is more indicative of a different condition.
Choice C rationale: Cholelithiasis (gallstones) might cause abdominal pain but typically doesn’t lead to fever and hypotension.
Choice D rationale: Symptoms including severe abdominal pain, radiation to the back, fever, and hypotension suggest acute pancreatitis, a potentially serious condition requiring urgent medical attention.
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