The package insert instructs reconstituting with 3.4 mL of sterile water to yield nafcillin 250 mg/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 ["2"]

Step 1 is to determine the amount of medication in 1 mL after reconstitution. This is calculated by dividing the total available medication (1000 mg) by the total volume after reconstitution (3.4 mL):

1000 mg ÷ 3.4 mL = 294.12 mg/mL

Step 2 is to determine how many mL are needed to obtain 500 mg. This is done by dividing the required dose (500 mg) by the concentration (294.12 mg/mL):

500 mg ÷ 294.12 mg/mL = 1.7 mL

Rounding to the nearest whole number, the correct amount to administer is 2 mL.

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Correct Answer is ["9.4"]

Explanation

Step 1 is to calculate the dose to be administered which is 300 mg. Step 2 is to calculate the concentration of the available medication which is 160 mg/5 mL. Step 3 is to calculate the volume to be administered as (300 mg ÷ (160 mg/5mL)) = 9.375 mL.

So, the correct answer is, after analyzing all steps, the nurse should administer 9.4 mL per dose (rounded to the nearest tenth).

Correct Answer is ["1.5"]

Explanation

Step 1 is to calculate the volume to administer using the formula:

Dose (mg) ÷ Concentration (mg/mL)

Given that the prescribed dose is 1.5 mg and the available concentration is 1 mg/mL, we calculate:

1.5 mg ÷ 1 mg/mL = 1.5 mL

Since the result is already rounded to the nearest tenth, the nurse should administer 1.5 mL of oxymorphone.

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The package insert instructs reconstituting with 3.4 mL of sterile water to yield nafcillin 250 mg/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 is preparing to administer acetaminophen 300 mg PO every 4 hr PRN headache. Available is acetaminophen liquid 160 mg/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.). mL. .

Correct Answer is ["9.4"]

Explanation

A nurse is preparing to administer oxymorphone 1.5 mg IM to a client. Available is oxymorphone 1 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["1.5"]

Explanation

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The package insert instructs reconstituting with 3.4 mL of sterile water to yield nafcillin 250 mg/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.)