ATI LPN
ATI LPN Pharmacology Exam Questions
Extract:
Question 1 of 5
What are the two main purposes for diuretics?
Correct Answer: A
Rationale: Diuretics reduce fluid volume and lower blood pressure.
Question 2 of 5
Order: 1000 mL of D5½NS with 1 ampule of multiple vitamins to infuse over 8 hours Available: Macrodrip set: 15 gtt/mL Calculate the IV flow rate in gtt/min.
Correct Answer: A
Rationale: Flow rate = (1000 mL / 8 hr × 15 gtt/mL) / 60 = 31.25 gtt/min, rounded to 31 gtt/min.
Question 3 of 5
Before drug reconstitution, the nurse would check the drug circular and/or drug label for instructions. After a drug has been reconstituted and additional doses are available, which information would the nurse write on the drug label? (Select all that apply.)
Correct Answer: B,C,D
Rationale: B: Specifies diluent used. C: Ensures timely use. D: Identifies preparer.
Question 4 of 5
A nurse is preparing to administer dopamine 3mcg/kg/min by continuous IV infusion to a preschooler who weighs 41.8 bs. Available is dopamine 400 mg in dextrose 596 in water (D5W) 250 mL. The nurse should set the IV pump to deliver how many ml/hr? (Round to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: A
Rationale: Weight = 41.8 lb × 0.453592 = 18.96 kg. Dose = 3 mcg/kg/min × 18.96 kg × 60 = 3412.8 mcg/hr. Concentration = 400 mg / 250 mL = 1.6 mg/mL = 1600 mcg/mL. Flow rate = 3412.8 / 1600 = 2.13 mL/hr, rounded to 2.1 mL/hr.
Question 5 of 5
The patient is receiving nitroglycerin 55 mcg/min. Available: Nitroglycerin in 5% Dextrose Injection 25 mg per 250 mL (100 mcg/mL) What is the flow rate?
Correct Answer: D
Rationale: Dose = 55 mcg/min × 60 = 3300 mcg/hr. Flow rate = 3300 mcg/hr / 100 mcg/mL = 33 mL/hr.