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 A
Explanation
Choice A rationale: An allergy to sulfa drugs is important as some diabetes medications, like sulfonylureas, contain components related to sulfa drugs, which could cause an allergic reaction in susceptible individuals.
Choice B rationale: Smoking cessation and lifestyle history are important but might not directly impact initial diabetes treatment options.
Choice C rationale: Numbness in the soles of the feet might indicate neuropathy, a common complication of diabetes, but is not directly related to the choice of initial treatment.
Choice D rationale: While obesity is a risk factor for Type 2 diabetes, it's less critical for immediate treatment decisions compared to drug allergies that could impact medication choices.
Correct Answer is A
Explanation
Choice A rationale: Arterial blood gas (ABG) findings provide direct information about oxygenation and acid-base balance in the blood, which can indicate hypoxemia and metabolic acidosis.
Choice B rationale: Oxygen saturation level provides information about oxygen saturation in the blood but doesn't give a complete assessment of acid-base balance or other gases in the blood.
Choice C rationale: White blood cell differential assesses different types of white blood cells and is not directly related to evaluating hypoxemia or metabolic acidosis.
Choice D rationale: Red blood cells (RBCs) and hemoglobin count findings are important but do not directly assess hypoxemia or metabolic acidosis.
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