A nurse is preparing to administer dextromethorphan 30 mg PO. The amount available is dextromethorphan oral liquid 7.5 mg/5mL. 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 ["20"]
To calculate the volume of dextromethorphan to be administered, we can use the following formula:
Volume (mL) = Desired Dose (mg) / Concentration (mg/mL)
Plugging in the given values:
Volume (mL) = 30 mg / (7.5 mg/5 mL)
Volume (mL) = 30 mg x (5 mL / 7.5 mg)
Volume (mL) = 20 mL
Therefore, the nurse should administer 20 mL of dextromethorphan oral liquid.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
When transcribing a dosage of two-tenths of a milligram, it's important to use the leading zero to clearly indicate the decimal point and prevent misinterpretation.
0.20 mg explicitly shows that the dose is two-tenths of a milligram.
2.0 mg could be misinterpreted as two milligrams.
2 mg without the decimal point could also lead to confusion.
Therefore, using 0.20 mg is the most accurate and unambiguous way to represent the dosage of two-tenths of a milligram.
Correct Answer is ["7"]
Explanation
To calculate the volume of amoxicillin to be administered, we can use the following formula:
Volume (mL) = Desired Dose (mg) / Concentration (mg/mL)
Plugging in the given values:
Volume (mL) = 350 mg / (250 mg/5 mL)
Volume (mL) = 350 mg x (5 mL / 250 mg)
Volume (mL) = 7 mL
Therefore, the nurse should administer 7 mL of amoxicillin.
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