A vial contains 1.5 g of ceftriaxone. The final concentration after adding diluent should be 600 mg/3 mL. How much diluent should a nurse add to achieve this concentration?
0.0075 mL
1.2 mL
7.5 mL
1800 mL
The Correct Answer is C
To calculate the amount of diluent that should be added, we need to first calculate the volume of the final solution. .
The final concentration of ceftriaxone should be 600 mg/3 mL, which is the same as 200 mg/mL. .
If we have 1.5 g (or 1500 mg) of ceftriaxone, we can divide this by the desired concentration to get the total volume of the final solution:.
1500 mg ÷ 200 mg/mL = 7.5 mL.
So, the total volume of the final solution should be 7.5 mL. .
To calculate the amount of diluent needed, we need to subtract the volume of the ceftriaxone from the total volume of the final solution:.
7.5 mL - 0.00 mL = 7.5 mL.
Therefore, a nurse should add 7.5 mL of diluent to the vial containing 1.5 g of ceftriaxone to achieve a final concentration of 600 mg/3 mL.
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Related Questions
Correct Answer is D
Explanation
To calculate the amount of magnesium sulfate to be added to the normal saline, we can use the formula:
Concentration = Dose / Volume Plugging in the given values, we get:
Concentration = 2 g / 50 mL Simplifying, we get:
Concentration = 0.04 g/mL
To find the amount of magnesium sulfate needed for 1000 mL of normal saline, we can multiply the concentration by the volume:
Amount = Concentration × Volume Amount = 0.04 g/mL × 1000 mL Amount = 40 g
Therefore, 40 g of magnesium sulfate must be added to 1000 mL of normal saline to provide the ordered infusion.
Correct Answer is C
Explanation
The ordered dose is 400 mcg, which is equal to 0.4 mg..
The medication is provided as 0.1 mg/mL, so to administer 0.4 mg, the nurse needs to give:.
0.4 mg ÷ 0.1 mg/mL = 4 mL.
Therefore, the nurse should administer 4 mL of atropine sulfate.
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