ATI LPN
ATI LPN Pharmacology Exam Questions
Extract:
Question 1 of 5
A patient was prescribed heparin sodium 18 units/kg/h; titrate according to the weight-based heparin protocol. The patient's weight is 123 pounds. Heparin 25,000 units/250 mL (100 units/mL) is available. Calculate the flow rate in mL/h (Round to the nearest tenths)
Correct Answer: A
Rationale:
To calculate the flow rate in mL/h, first convert the patient's weight from pounds to kilograms: 123 lbs / 2.2 = 55.9 kg. Next, calculate the total dose of heparin required per hour: 18 units/kg/h x 55.9 kg = 1006.2 units/h.
Then, determine the volume of heparin needed per hour: 1006.2 units/h / 100 units/mL = 10.1 mL/h. Since the flow rate should be rounded to the nearest tenths, the correct answer is 10 mL/h (
Choice
A). The other choices are incorrect because they do not reflect the accurate calculation based on the patient's weight, heparin concentration, and the prescribed dose per hour.
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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