A nurse is preparing to administer amikacin 5 mg/kg IM to a client who weighs 110 lb. Available is amikacin injection 250 mg/mL. How many mL should the nurse administer?
(Round the answer to the nearest whole number. Use a leading zero if applicable. Do not use a trailing zero.).
The Correct Answer is ["1"]
To solve this problem, we first need to convert the client’s weight from pounds to kilograms. Then, we can calculate the total amount of amikacin needed. Finally, we can find out how many milliliters of amikacin injection the nurse should administer.
- Convert the client’s weight to kilograms: Given that 1 kg = 2.2 lbs, we can calculate the client’s weight in kilograms as follows:
Weight in kg=Weight in lbsConversion factor=110 lbs2.2 lbs/kg≈50 kgWeight in kg=Conversion factorWeight in lbs=2.2 lbs/kg110 lbs≈50 kg
- Calculate the total amount of amikacin needed: The doctor ordered 5 mg of amikacin per kg of body weight, so the total amount of amikacin needed is:
Total amikacin=Dose per kg×Weight in kg=5 mg/kg×50 kg=250 mgTotal amikacin=Dose per kg×Weight in kg=5 mg/kg×50 kg=250 mg
- Find out how many milliliters of amikacin injection the nurse should administer: Given that the available amikacin injection is 250 mg/mL, we can calculate the volume of injection needed as follows:
Volume of injection=Total amikacinConcentration of injection=250 mg250 mg/mL=1 mLVolume of injection=Concentration of injectionTotal amikacin=250 mg/mL250 mg=1 mL
So, the nurse should administer 1 mL of amikacin injection.
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Naxlex Comprehensive Predictor Exams
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Correct Answer is C
Explanation
Choice A rationale:
The first dose of the varicella vaccine is usually given when the child is between 12 to 15 months old, not after 3 years.
Choice B rationale:
Aspirin should not be given to children due to the risk of Reye’s syndrome. This syndrome is a rare but serious condition that causes swelling in the liver and brain.
Choice C rationale:
The varicella vaccine should be avoided in children who have leukemia or any other condition that weakens the immune system.
Choice D rationale:
The varicella vaccine is not contraindicated for children who are allergic to eggs. It’s some other vaccines like influenza that have this restriction.
Correct Answer is A
Explanation
Choice A rationale:
Renal excretion time slows for medication. As people age, kidney function gradually decreases, which slows the excretion of medications. This can lead to increased levels of the drug in the body, which can increase the risk of side effects.
Choice B rationale:
Hepatic enzymes do not process medications more rapidly in older adults. In fact, liver function also decreases with age, which can slow the metabolism of medications.
Choice C rationale:
Brain receptors do not become less sensitive to medications in older adults. The sensitivity of brain receptors to medications can vary widely and is not necessarily related to age.
Choice D rationale:
Gastric emptying rate does not increase with age. On the contrary, it often slows down, which can affect the absorption of some medications.
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