ATI LPN Pharmacology Exam | Nurselytic

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ATI LPN Pharmacology Exam Questions

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Question 1 of 5

Order: dobutamine 5 mcg/kg/min Patient's weight: 152 lb Available: dobutamine 500 mg in 250 mL D5W What is the flow rate in ml/hr? (Round to the nearest tenths)

Correct Answer: D

Rationale:
To calculate the flow rate in mL/hr, first convert the patient's weight to kg: 152 lb ÷ 2.2 = 69.09 kg.
Then, calculate the dobutamine dose per hour: 5 mcg/kg/min x 69.09 kg x 60 min = 20727 mcg/hr. Next, convert mcg to mg: 20727 mcg ÷ 1000 = 20.727 mg/hr. Finally, determine the flow rate using the formula: (20.727 mg/hr ÷ 500 mg) x 250 mL = 10.3635 mL/hr, rounded to 10.4 mL/hr (
Choice
D).

Choices A, B, and C are incorrect due to incorrect calculations or units.

Question 2 of 5

Correct Answer:

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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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