A child with a seizure disorder receives a prescription for phenytoin 20 mg by mouth every 8 hours. The suspension is available in 125 mg/5 mL. How many mL should the nurse administer?
(Enter the numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["0.8"]
To find the answer, we can use the following formula:
(mL to be administered) = (mg prescribed) / (mg per mL)
Substituting the given values, we get:
(mL to be administered) = (20) / (125 / 5)
Simplifying, we get:
(mL to be administered) = (20) x (5 / 125)
(mL to be administered) = 0.8
Therefore, the nurse should administer 0.8 mL of phenytoin suspension to the child.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["15"]
Explanation
To find the answer, we can use the following steps:
- Convert the child's weight from pounds to kilograms by dividing by 2.2
- Calculate the total daily dose of amoxicillin in mg by multiplying the weight in kg by the dosage in mg/kg/day
- Divide the total daily dose of amoxicillin in mg by the number of doses per day to get the dose per administration
- Divide the dose per administration in mg by the concentration of amoxicillin in mg/mL
- Round the result to the nearest whole number
Using these steps, we get:
- (weight in kg) = (66) / (2.2) = 30 kg
- (total daily dose in mg) = (80) x (30) = 2400 mg
- (dose per administration in mg) = (2400) / (2) = 1200 mg
- (volume per administration in mL) = (1200) / (400 / 5) = 15 mL
- (rounded volume per administration in mL) = 15 mL
Therefore, the nurse should administer 15 mL of amoxicillin oral suspension with each dose.
Correct Answer is ["0.4"]
Explanation
To find the answer, we can use the following formula:
(mL to be administered) = (units prescribed) / (units per mL)
Substituting the given values, we get:
(mL to be administered) = (240,000) / (1,200,000 / 2)
Simplifying, we get:
(mL to be administered) = (240,000 x 2) / (1,200,000)
(mL to be administered) = 480,000 / 1,200,000
(mL to be administered) = 0.4
Therefore, the nurse should administer 0.4 mL of penicillin G procaine to the child.
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