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 ["1.2"]
Explanation
To calculate the dose of digoxin for the preschooler, we'll follow these steps:
Step 1: Convert the child's weight from pounds to kilograms:
33 pounds x (1 kg / 2.20462 pounds) ≈ 15 kg
Step 2: Calculate the total daily dose of digoxin:
Total Daily Dose (mcg) = Digoxin Dose (mcg/kg/day) x Weight (kg)
Total Daily Dose = 8 mcg/kg/day x 15 kg
Total Daily Dose = 120 mcg/day
Step 3: Calculate the dose per administration (BID):
Dose per Administration = Total Daily Dose / Number of Administrations per Day
Dose per Administration = 120 mcg/day / 2 doses/day
Dose per Administration = 60 mcg/dose
Step 4: Convert micro-grams to milligrams:
60 mcg x (1 mg / 1000 mcg) = 0.06 mg
Step 5: Calculate the volume to be administered:
Volume (mL) = Desired Dose (mg) / Concentration (mg/mL)
Volume = 0.06 mg / 0.05 mg/mL
Volume = 1.2 mL
Therefore, the nurse should administer 1.2 mL of digoxin elixir per dose.
Correct Answer is A
Explanation
To calculate the recommended dosage range for the toddler and compare it to the prescribed dose, we'll follow these steps:
Step 1: Calculate the recommended minimum daily dose:
Recommended Minimum Daily Dose = 20 mg/kg/day x 20 kg
Recommended Minimum Daily Dose = 400 mg/day
Step 2: Calculate the recommended maximum daily dose:
Recommended Maximum Daily Dose = 25 mg/kg/day x 20 kg
Recommended Maximum Daily Dose = 500 mg/day
Step 3: Calculate the prescribed daily dose:
Prescribed Daily Dose = 100 mg/dose x 3 doses/day
Prescribed Daily Dose = 300 mg/day
Step 4: Compare the prescribed dose to the recommended dosage range:
The prescribed daily dose (300 mg/day) is below the recommended minimum daily dose (400 mg/day).
Therefore, the nurse should:
The nurse should contact the health-care provider to request a dosage adjustment.
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