A nurse is preparing to administer levothyroxine 0.4 mg IV bolus. The nurse reconstitutes a vial of levothyroxine to yield a final concentration of 100 mcg/ml. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it apples. Do not use a trailing zero.)
The Correct Answer is ["4"]
The nurse should administer 4 mL of levothyroxine.
Calculations:
Convert 0.4 mg to mcg: 0.4 mg x 1000 mcg/mg = 400 mcg
Desired dose = 400 mcg
Concentration = 100 mcg/mL
Volume = Desired dose / Concentration = 400 mcg / 100 mcg/mL = 4 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.7"]
Explanation
Let's calculate the lorazepam dose
Step-by-step solution:
1. Convert pounds to kilograms:
1 lb = 0.453592 kg
150 lb x 0.453592 kg/lb = 68.04 kg
2. Calculate the total dose of lorazepam:
Dose = 0.05 mg/kg x 68.04 kg = 3.402 mg
3. Calculate the volume to administer:
The medication concentration is 2 mg/mL.
Volume = Total dose / Concentration = 3.402 mg / 2 mg/mL = 1.701 mL
4. Round to the nearest tenth:
Volume = 1.7 mL
Therefore, the nurse should administer 1.7 mL of lorazepam.
Correct Answer is ["7.5"]
Explanation
Calculations:
Desired dose = 15 mg
Concentration = 10 mg/5 mL
Volume = Desired dose / Concentration = 15 mg / (10 mg/5 mL) = 7.5 mL
The nurse should administer 7.5 mL of codeine.
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