A nurse is preparing to administer phenytoin 75 mg PO. Available is phenytoin suspension 25 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 ["15"]

Step 1: Determine how many milligrams are in each milliliter of the suspension.

Total milligrams ÷ Total milliliters
25 mg ÷ 5 mL = 5 mg/mL

Step 2: Determine how many milliliters are needed to administer 75 mg.

Desired milligrams ÷ Milligrams per milliliter
75 mg ÷ 5 mg/mL = 15 mL

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Correct Answer is A

Explanation

Choice A rationale:

Developing a respiratory infection can indeed trigger a myasthenic crisis. Any form of stress on the body, including infections, can exacerbate symptoms.

Choice B rationale:

Taking too much prescribed medication is not typically a cause of myasthenic crisis. However, medication changes should always be managed carefully.

Choice Crationale:

Insufficient sleep can contribute to overall stress and fatigue, potentially exacerbating symptoms, but it is not a primary cause of myasthenic crisis.

Choice Drationale:

Insufficient exercise is not a known trigger for myasthenic crisis. While regular exercise can help manage symptoms, lack of exercise is not a direct cause.

Correct Answer is ["1.5"]

Explanation

Step 1 is to determine the amount of citalopram that needs to be administered, which is 30 mg.

Step 2 is to calculate the number of tablets needed to deliver this dose. This is done using the formula:

Dose (mg) ÷ Strength per tablet (mg/tab)

Given that each tablet contains 20 mg, we calculate:

30 mg ÷ 20 mg/tab = 1.5 tablets

Therefore, the nurse should administer 1.5 tablets of citalopram.

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A nurse is preparing to administer phenytoin 75 mg PO. Available is phenytoin suspension 25 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.)

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse in the emergency department is assisting with the care of a client who has myasthenia gravis and is in crisis. The nurse should identify that which of the following factors can cause a myasthenic crisis?.

Correct Answer is A

Explanation

A nurse is preparing to administer citalopram 30 mg PO to a client who has major depression. Available in citalopram 20 mg tablets. How many tablets should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies.)

Correct Answer is ["1.5"]

Explanation

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A nurse is preparing to administer phenytoin 75 mg PO. Available is phenytoin suspension 25 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.)