A nurse is preparing to administer amikacin 5 mg/kg via intermittent IV bolus to a client who weighs 219 lb. Available is amikacin 10 mg/mL. How many mL should the nurse administer?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["50"]
Step 1 is to convert the client’s weight from pounds to kilograms, since the dosage is prescribed in mg/kg. Given that 1 kg = 2.2 lb, we calculate:
219 lb ÷ 2.2 = 99.5 kg
Rounding to the nearest whole number, the client’s weight is 100 kg.
Step 2 is to determine the total dosage of amikacin required. The prescribed dosage is 5 mg/kg, so we calculate:
5 mg/kg × 100 kg = 500 mg
Step 3 is to determine the volume to administer. The available concentration of amikacin is 10 mg/mL, so we divide:
500 mg ÷ 10 mg/mL = 50 mL
Thus, the correct amount to administer is 50 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
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Correct Answer is D
Explanation
Choice A rationale:
Meloxicam 15 mg PO daily is a standard dose for treating osteoarthritis and rheumatoid arthritis.
Choice B rationale:
Regular insulin 8 units subcutaneous before meals is a typical dose for managing blood glucose levels in diabetes.
Choice C rationale:
Docusate sodium 200 mg PO at bedtime is a common dose for preventing constipation.
Choice D rationale:
Fentanyl 25 mcg/hr transdermal patch is a potent opioid, and the dose should be carefully monitored. If the client has not been on opioid therapy, this dose might be too high.
Correct Answer is ["150"]
Explanation
Step 1 is to determine the rate of infusion. This is done by dividing the total volume by the total time. So, we have 1200 mL ÷ 8 hr = 150 mL/hr.
So, the correct answer is 150 mL/hr.
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