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 ["50"]

Explanation

Total daily dose = 200 mg Frequency = Every 6 hours Total number of doses =24/6

=4 doses

Total dose = 200mg Per dose= 200mg/4

= 50mg

So, the nurse should administer 50 mg per dose.

Correct Answer is ["2"]

Explanation

Given:

Desired dose of ibuprofen: 200 mg
Available strength of ibuprofen oral suspension: 100 mg/5 mL

First, find out the concentration of ibuprofen in mg/mL:

Concentration = 100 mg / 5 mL Concentration = 20 mg/mL

Now, calculate how many milliliters (mL) of ibuprofen oral suspension are needed to achieve the desired dose:

Volume (mL) = Desired dose / Concentration Volume (mL) = 200 mg / 20 mg/mL

Volume (mL) = 10 mL

Since 1 teaspoon (tsp) is approximately 5 milliliters (mL), the nurse should instruct the client to take:

Number of teaspoons = Volume (mL) / 5 mL per tsp Number of teaspoons = 10 mL / 5 mL per tsp Number of teaspoons = 2 tsp

So, the nurse should instruct the client to take 2 teaspoons of ibuprofen oral suspension.

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Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer diclofenac sodium 200 mg PO daily in equally divided doses every 6 hr. How many mg should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["50"]

Explanation

Correct Answer is ["2"]

Explanation

A nurse is teaching an assistive personnel (AP) about documenting in a client's chart. Which of the following should the nurse instruct the AP to use when documenting a client's weight in metric units?

Which of the following statements about the drug below is true.

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