A nurse is preparing to administer ceftriaxone 250 mg IM to an adult client who has a gonococcal infection. The label on the vial indicates to reconstitute each vial with sterile water 2.1 mL to yield ceftriaxone 350 mg/mL. How many mL of the reconstituted medication should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.71"]
To calculate how many milliliters (mL) of the reconstituted medication to administer, you need to determine the desired dose and then divide it by the concentration of the reconstituted solution.
The label indicates that each vial, when reconstituted, contains ceftriaxone 350 mg/mL.
The desired dose is 250 mg.
So, you can use the following formula:
Volume to administer (mL) = Desired dose (mg) / Concentration of the reconstituted solution (mg/mL)
Volume to administer (mL) = 250 mg / 350 mg/mL
Volume to administer (mL) = 0.7143 mL (rounded to the nearest hundredth)
Therefore, the nurse should administer approximately 0.71 mL of the reconstituted ceftriaxone solution.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["2.3"]
Explanation
To calculate the amount of morphine (in mL) the nurse should administer, follow these steps:
Step 1: Convert the client's weight from pounds to kilograms. 99 lb / 2.2 lb/kg ≈ 45 kg (rounded to the nearest whole number)
Step 2: Calculate the total dose based on the client's weight. 0.1 mg/kg * 45 kg = 4.5 mg
Step 3: Determine how many mL of the available morphine solution (2 mg/mL) are needed to achieve the prescribed dose. 4.5 mg ÷ 2 mg/mL = 2.25 mL
Rounded to the nearest tenth, the nurse should administer 2.3 mL of morphine.
Correct Answer is C
Explanation
a. Store the medication at room temperature following reconstitution: This option is incorrect. While it provides information about the storage of the medication after reconstitution, it doesn't pertain to the reconstitution process itself. Storage information is essential but not part of the reconstitution process.
b. Use 0.9% sodium chloride solution as a diluent: This option is incorrect. The label instructions mention adding water for reconstitution, not sodium chloride solution. Using the wrong diluent can result in incorrect drug concentrations and potential harm to the patient.
c. Discard any remaining medication after 10 days: This option is correct. The label clearly states that the reconstituted medication should be discarded after 10 days. This is important information for safe medication administration.
d. Roll the vial gently in hands to mix the medication: This option is incorrect. The label instructions specify shaking vigorously to wet the powder and then adding the remaining water, followed by vigorous shaking. Rolling the vial gently is not mentioned in the label instructions.
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