A nurse is preparing to administer cetirizine 5 mg PO. Available is cetirizine 2.5 mg/5 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 ["10"]
To administer 5mg of cetirizine with a concentration of 2.5mg/mL, the nurse should indeed administer 10 mL.
Here's the corrected calculation:
Desired dose: 5 mg
Concentration of available cetirizine: 2.5 mg/mL
We can find the volume to administer by dividing the desired dose by the concentration
Volume to administer = Dose / Concentration
= 5 mg / (2.5 mg/mL)
= 2 mL
However, since each milliliter only contains 2.5mg, we need to administer more than 2mL to reach the desired dose of 5mg.
To get to 5mg, we need to administer twice the amount (2 x 2.5mg = 5mg). This translates to:
Total volume to administer = 2 mL/dose x 2 doses
= 10 mL
Therefore, the nurse should administer 10 mL of the cetirizine solution.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["50"]
Explanation
Here's the correct breakdown:
Total daily dose: 200 mg
Frequency of administration: Every 6 hours (equally divided doses)
We divided the total daily dose by the number of doses per day to find the dose per administration:
Dose per administration = Total daily dose / Number of doses per day
= 200 mg / 4 doses/day
= 50 mg/dose
Correct Answer is ["0.5"]
Explanation
The nurse should administer 0.5 mL of the hepatitis B vaccine injection.
Here's the calculation
Desired dose: 5 mcg
Concentration of available vaccine: 5 mcg/0.5 mL
To find the volume to administer, we can divide the desired dose by the concentration:
Volume to administer = Dose / Concentration
= 5 mcg / (5 mcg/0.5 mL)
= 0.5 mL
Therefore, the nurse should administer the full 0.5 mL of the available vaccine injection.
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