A nurse is preparing to administer ceftriaxone 75 mg/kg/day IM in two divided doses to a child who weighs 37 lb. The amount available after reconstitution is ceftriaxone 350 mg/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.)

Answer and Explanation

The Correct Answer is ["1.8 "]

Given:

Desired dose of ceftriaxone: 75 mg/kg/day
Child's weight: 37 lb
Available strength of ceftriaxone after reconstitution: 350 mg/mL

First, convert the child's weight from pounds to kilograms: 37 lb ÷ 2.20462 = 16.78 kg (rounded to the nearest hundredth)

The total daily dose of ceftriaxone:

Total daily dose = Desired dose × Child's weight

Total daily dose = 75 mg/kg/day × 16.78 kg Total daily dose ≈ 1258.5 mg

Since the total daily dose is to be divided into two equal doses, each dose would be:

Each dose = Total daily dose / Number of doses per day Each dose = 1258.5 mg / 2

Each dose = 629.25 mg

The milliliters of ceftriaxone correspond to each dose:

Volume (mL) = Dose / Concentration

Volume (mL) = 629.25 mg / 350 mg/mL Volume (mL) ≈ 1.8 mL

So, the nurse should administer approximately 1.8 mL of ceftriaxone per dose.

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Free Nursing Study Resources

Correct Answer is ["5000000"]

Explanation

1g= 1,000,000 mcg

5g= 5 *1,000,000

=5,000,000 mcg

A. 240 mL B. 960 mL C. 30 mL D. 480 mL

Correct Answer is A

Explanation

A. To convert ounces (oz) to milliliters (mL), you can use the conversion factor of 1 oz = 29.5735 mL. Therefore, to find out how many milliliters are in 8 ounces:
8 oz * 29.5735 mL/oz = 236.588 mL ≈ 240 mL

B. 960ml is incorrect

C. 30ml is incorrect

D. 480ml is incorrect

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Naxlex Comprehensive Predictor Exams

A nurse is converting a medication dose from g to mcg. The amount available is 5 g. The nurse should recognize that this amount is equal to how many mcg? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["5000000"]

Explanation

A nurse is documenting the oral intake of a client who drank 8 oz of milk. The nurse should document that this amount is equal to how many ml?

Correct Answer is A

Explanation

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