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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"]

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 ["15"]

Explanation

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

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

Given:

Desired dose = 750 mg

Amount of drug in 1 mL = 250 mg/5 mL = 50 mg/mL

Now, let's calculate the amount to administer:

Amount to administer (mL) = 750 mg / 50 mg/mL

Amount to administer (mL) = 15 mL

Rounding to the nearest whole number, the nurse should administer 15 mL of the amoxicillin liquid suspension.

Correct Answer is C

Explanation

Choice A reason: This is incorrect because fentanyl 25 mcg/hr transdermal patch is a common and appropriate dose for chronic pain management. Fentanyl is a potent opioid analgesic that delivers a steady amount of medication through the skin over 72 hours.

Choice B reason: This is incorrect because meloxicam 15 mg PO daily is a standard and safe dose for treating inflammation and pain caused by arthritis. Meloxicam is a nonsteroidal anti-inflammatory drug (NSAID) that reduces the production of prostaglandins, which are involved in inflammation.

Choice C reason: This is correct because regular insulin 8 units subcutaneous before meals is a vague and potentially dangerous prescription. Regular insulin is a short-acting insulin that lowers blood glucose levels by facilitating the uptake of glucose into the cells. The dose of insulin should be individualized based on the client's blood glucose level, carbohydrate intake, and activity level. The nurse should contact the provider for clarification on how to adjust the dose according to the client's needs.

Choice D reason: This is incorrect because docusate sodium 200 mg PO at bedtime is a usual and effective dose for preventing constipation. Docusate sodium is a stool softener that works by increasing the amount of water in the stool, making it easier to pass.

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