A nurse is preparing to administer ceftazidime 750 mg IM. Available is ceftazidime 1 g vial.
The nurse reconstitutes the medication to yield a final concentration of ceftazidime 280 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.)
The Correct Answer is ["2.7 "]
Volume (mL) = Desired dose / Concentration
Volume (mL) = 750 mg / 280 mg/mL
Volume (mL) rounded off to the nearest tenth ≈ 2.7 mL
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Related Questions
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 ["1.8 "]
Explanation
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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