Morphine sulfate 10 mg IM is ordered. Morphine sulfate 5 mg/mL is available. What volume (mL) should be administered?
0.5 mL
1 mL
1.5 mL
2 mL
The Correct Answer is D
To calculate the volume to be administered, divide the ordered dose by the available concentration:
10 mg ÷ 5 mg/mL = 2 mL
The nurse should administer 2 mL of morphine sulfate 5 mg/mL to give a total dose of 10 mg.
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Related Questions
Correct Answer is B
Explanation
We can use proportion to calculate the volume of Primaxin to administer:. 275 mg is to X mL as 500 mg is to 2 mL.
275/X = 500/2.
Cross-multiplying, we get:. 500X = 275 x 2.
X = (275 x 2)/500. X = 1.1 mL.
Therefore, the nurse should administer 1.1 mL of Primaxin to the patient, rounded to the nearest tenth.
Correct Answer is C
Explanation
We can use the following formula to calculate the infusion rate:
Infusion rate (mL/hr) = (Dose ordered in mcg/min x Volume to be infused in mL) / Dose available in mg
First, we need to convert the dose ordered from mg/min to mcg/min: 125 mg = 125,000 mcg
125,000 mcg/500 mL = 250 mcg/mL
Now we can plug in the values we have into the formula:
Infusion rate (mL/hr) = (42 mcg/min x 60 min x 24 hours) / (250 mcg/mL) Infusion rate (mL/hr) = 10.08 mL/hr
Rounding to the nearest tenth, the answer is C. 10.1 mL/hr.
Therefore, the nurse should program the IV pump to deliver the nitroglycerin at a rate of 10.1 mL/hr to achieve the ordered dose of 42 mcg/minute.
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