A patient is ordered 5 mg of IV Lopressor (metoprolol tartrate) to be administered over 60 seconds. The concentration is 1 mg/1 mL.
How many milliliters per minute should the nurse administer to the patient?
0.008 mL
1 mL
5 mL
300 mL
The Correct Answer is C
The patient is ordered to receive 5 mg of Lopressor over 60 seconds, which is equivalent to 1 minute. The concentration of Lopressor is 1 mg/1 mL, which means there is 1 mg of Lopressor in 1 mL of solution. To calculate how many milliliters per minute the nurse should administer, we can use the following formula:
5 mg / 1 mg per 1 mL = X mL X = 5 mL per minute.
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Related Questions
Correct Answer is B
Explanation
If one dose of medication is 25 mg and each vial contains 50 mg of medication, then each vial contains two doses..
To calculate the number of vials required for 5 days of treatment, we first need to calculate the total number of doses required. Since the client requires two injections per day, the total number of doses required for 5 days would be:.
Total number of doses = 2 doses/day x 5 days. Total number of doses = 10 doses.
Since each vial contains two doses, we need a total of 10/2 = 5 vials for 5 days of treatment..
Therefore, the nurse would need 5 vials of the medication for 5 days of treatment for the client.
Correct Answer is D
Explanation
A. 0.04 mg
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This is far too small.
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It might come from a miscalculation involving the concentration (1 mg/mL) and volume (5 mL), but incorrectly dividing again by 100.
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Not clinically reasonable because the patient would barely receive any drug.
B. 0.25 mg
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This is also incorrect.
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It could result from mistakenly dividing 5 mg by 20 minutes instead of 2 minutes.
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Again, far below the actual ordered rate.
C. 3.75 mg
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This is incorrect but closer.
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It might come from a misstep like subtracting 1.25 mg from the correct answer (2.5 mg) or misusing the concentration.
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Still not the right calculation.
D. 2.5 mg
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Correct answer.
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Direct calculation: 5 mg ÷ 2 minutes = 2.5 mg/min.
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Matches the ordered dose and administration time.
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