ATI LPN
ATI LPN Pharmacology Exam Questions
Extract:
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: Weight = 152 lb × 0.453592 = 68.95 kg. Dose = 5 mcg/kg/min × 68.95 kg × 60 = 20,685 mcg/hr. Concentration = 500 mg / 250 mL = 2000 mcg/mL. Flow rate = 20,685 / 2000 = 10.34 mL/hr, rounded to 10.4 mL/hr.
Question 2 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: Concentration = 50 mg / 250 mL = 200 mcg/mL. Dose = 3 mL/hr × 200 mcg/mL = 600 mcg/hr.
Question 3 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: Weight = 123 lb × 0.453592 = 55.79 kg. Dose = 18 units/kg/hr × 55.79 kg = 1004.22 units/hr. Flow rate = 1004.22 / 100 = 10.04 mL/hr, rounded to 10.0 mL/hr.
Question 4 of 5
Convert the following metric measures to kg by moving the decimal: 5,524 g
Correct Answer: A
Rationale: 5,524 g ÷ 1000 = 5.524 kg.
Question 5 of 5
Who is the primary authority source for drug standards in the United States?
Correct Answer: B
Rationale: FDA regulates drug safety, efficacy, and standards.