A nurse is preparing to administer tobramycin 3 mg/kg/day IM divided in three equal doses to a client who weighs 50 kg. Available is tobramycin 40 mg/mL How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["1.3"]
Step-by-step solution:
1. Calculate the total daily dose:
Total daily dose = dose per kg/day x weight in kg = 3 mg/kg/day x 50 kg = 150 mg/day
2. Calculate the dose per administration:
Since the medication is divided into 3 doses per day,
Dose per administration = Total daily dose / number of doses = 150 mg/day / 3 doses = 50 mg/dose
3. Calculate the volume to administer:
The medication concentration is 40 mg/mL.
Volume = Dose per administration / Concentration = 50 mg / 40 mg/mL = 1.25 mL
4. Round to the nearest tenth:
Volume = 1.3 mL
Therefore, the nurse should administer 1.3 mL of tobramycin per dose
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["4"]
Explanation
Calculations:
Desired dose = 1g = 1000 mg
Concentration = 225 mg/mL
Volume = Desired dose / Concentration = 1000 mg / 225 mg/mL = 4.44 mL
Rounded to the nearest whole number = 4 mL
Correct Answer is ["24"]
Explanation
Calculations:
The heparin solution contains 25,000 units in 500 mL.
To deliver 1,200 units/hour, we need to find out how many mL will deliver this amount.
Set up a proportion:
25,000 units / 500 mL = 1,200 units / x mL
Cross-multiply:
25,000x = 1,200 x 500
Solve for x:
x = (1,200 x 500) / 25,000 = 24 mL/hr
The nurse should set the IV pump to deliver 24 mL/hr.
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