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: This patient is likely experiencing hyperosmolar hyperglycemic state (HHS). Rapid administration of IV fluids is crucial to correct severe dehydration associated with HHS.
Choice B rationale: Routine insulin therapy and exercise might be components of diabetes management but wouldn't directly address the immediate concern of severe dehydration and high blood glucose.
Choice C rationale: Cardiac monitoring for potassium changes might be necessary but isn't the primary immediate intervention for HHS.
Choice D rationale: Administering a different antibiotic for the UTI is incorrect, because there is no evidence that the current antibiotic is ineffective or causing adverse effects. The UTI may have triggered the HHS, but it is not the main problem that needs to be addressed urgently.
Correct Answer is A
Explanation
Choice A rationale: Propranolol, a beta-blocker used for high blood pressure and other cardiovascular conditions, is known to have potential side effects of sexual dysfunction, including erectile dysfunction (ED).
Choice B rationale: Ranitidine (Zantac) is an H2 blocker used for acid reflux and isn't typically associated with causing ED.
Choice C rationale: Atorvastatin (Lipitor), a statin used for high cholesterol, isn't commonly associated with causing ED.
Choice D rationale: Metformin (Glucophage), used for type 2 diabetes, is not typically linked to causing ED.
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