ATI LPN
ATI LPN Pharmacology Exam Questions
Extract:
Question 1 of 5
A Nitroglycerin drip is infusing at 3 mL/hr. the available solution is 50 mg of Nitroglycerin in 250 mL D5W. Calculate the following: mcg/hr
Correct Answer: A
Rationale:
To calculate mcg/hr, we first need to find the total amount of Nitroglycerin in 1 mL of the solution. Since there are 50 mg of Nitroglycerin in 250 mL, there are 50/250 = 0.2 mg in 1 mL. Next, convert mg to mcg by multiplying by 1000, giving 0.2 mg = 200 mcg in 1 mL. Finally, multiply the infusion rate of 3 mL/hr by the amount of Nitroglycerin in 1 mL (200 mcg) to get 600 mcg/hr. This is why choice A is correct.
Choices B, C, and D are incorrect as they do not follow the correct calculation method or use the wrong conversion factors.
Question 2 of 5
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Question 3 of 5
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Question 4 of 5
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Question 5 of 5
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