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 D
Explanation
Choice A rationale: Furosemide is a loop diuretic used to increase urine output by blocking the reabsorption of sodium and water. It's not typically associated with hyperkalemia. In fact, it's more common for loop diuretics like furosemide to cause hypokalemia (low potassium) due to increased urinary excretion of potassium.
Choice B rationale: Lovastatin is a statin used to lower cholesterol levels. It is not related to increased cholesterol. Additionally, there is no known direct interaction between lovastatin and furosemide. Furosemide is a diuretic, while selective serotonin reuptake inhibitors (SSRIs) are a class of antidepressants, and they do not typically interact in a way that requires discontinuation.
Choice C rationale: Duloxetine is an antidepressant (SNRI), and glipizide is an oral diabetes medication. There's no direct interaction between duloxetine and glipizide that would necessitate discontinuation.
Choice D rationale: Trimethoprim/sulfamethoxazole (Bactrim) is a sulfonamide antibiotic, and glipizide belongs to the sulfonylurea class of medications. Both drugs contain sulfur groups in their chemical structures, and there is a possibility of cross-reactivity or drug interaction. This interaction can potentially reduce the effectiveness of glipizide, leading to compromised blood sugar control. Additionally, sulfonamide antibiotics like trimethoprim/sulfamethoxazole can cause adverse reactions, including skin rashes or hypersensitivity reactions, particularly in individuals sensitive to sulfa medications.
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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