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: Smoking is a risk factor for osteoporosis as it can interfere with calcium absorption and decrease bone density.
Choice B rationale: Moderate alcohol consumption isn't a significant risk factor for osteoporosis.
Choice C rationale: Generally, having a larger body stature is not considered a significant risk factor for osteoporosis.
Choice D rationale: While fractures during childhood can affect bone health, they might not necessarily predict osteoporosis risk in adulthood.
Correct Answer is D
Explanation
Choice A rationale: Tachycardia and petechiae over the chest wall and buccal membranes are signs of fat embolism syndrome, another complication of fractures that occurs when fat globules enter the bloodstream and obstruct pulmonary vessels.
Choice B rationale: Positive Homan's sign with calf tenderness and warmth are signs of deep vein thrombosis, a condition that can occur after prolonged immobilization or surgery.
Choice C rationale: Acute cough, cyanosis, and decreased blood pressure are signs of pulmonary embolism, a life-threatening condition that occurs when a blood clot travels to the lungs and blocks blood flow.
Choice D rationale: These are signs of compartment syndrome, which is a serious complication of fractures that occurs when increased pressure within a closed space compromises blood flow and tissue perfusion. Compartment syndrome can lead to ischemia, necrosis, and nerve damage if not treated promptly.
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