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A nurse is preparing to administer phenytoin 200 mg via a gastrostomy tube. Available is phenytoin oral suspension 125 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.)
Answer and Explanation

The Correct Answer is ["8 mL"]

To calculate the amount of phenytoin oral suspension to administer, we can use the following formula:

Amount to administer (mL) = (Desired dose (mg) / Available dose (mg/mL))

Plugging in the given values:

Amount to administer (mL) = (200 mg / 125 mg/5 mL)

Now, let's solve for the amount to administer:

Amount to administer (mL) = (200 mg / 125 mg/5 mL) = (200 / 125)  5 = 8

So, the nurse should administer 8 mL of phenytoin oral suspension via the gastrostomy tube.


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Related Questions

Correct Answer is ["0.7 mL"]

Explanation

To calculate the amount of epoetin that the nurse should administer, we can use the following formula:

Amount to administer (mL) = (Desired dose in units) / (Amount of drug in 1 mL)

Given:

Desired dose = 7,000 units

Amount of drug in 1 mL = 10,000 units/mL

Now, let's calculate the amount to administer:

Amount to administer (mL) = 7,000 units / 10,000 units/mL

Amount to administer (mL) = 0.7 mL

Rounding to the nearest tenth, the nurse should administer 0.7 mL of the epoetin.

Correct Answer is ["4.5 mL"]

Explanation

To calculate the dose of ondansetron that the nurse should administer, we can follow these steps:

Convert the client's weight from pounds to kilograms:

132 lb ÷ 2.2 = 60 kg

Calculate the dose of ondansetron:

0.15 mg/kg × 60 kg = 9 mg

Determine the volume of ondansetron needed using the available concentration:

9 mg ÷ 2 mg/mL = 4.5 mL

Rounding to the nearest tenth, the nurse should administer 4.5 mL of ondansetron via IV.

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