ATI LPN
ATI LPN Pharmacology Exam Questions
Extract:
Question 1 of 5
A physician ordered 1/4 strength Isomil 12 oz via nasogastric tube over 6 hours. How much solvent (water) will be needed?
Correct Answer: B
Rationale:
Total volume = 12 oz × 29.5735 = 354.88 mL. Isomil = 354.88 × 1/4 = 88.72 mL. Water = 354.88 - 88.72 = 266.16 mL, rounded to 270 mL.
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 continuous heparin infusion is to begin at 15 units/kg/hr for a client weighing 82 kg. Available: 25,000 units of heparin in 250 mL D5W. Calculate the mL/hr. (the pump is capable of delivering in tenths of an mL).
Correct Answer: A
Rationale:
Total dose = 15 units/kg/hr × 82 kg = 1230 units/hr. Concentration = 25,000 units / 250 mL = 100 units/mL. Infusion rate = 1230 / 100 = 12.3 mL/hr.
Question 4 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.
Question 5 of 5
A nurse is preparing to administer 0/9% sodium chloride (0.9% NaCl) 20ml/kg IV tp infuse over 6 hr to a school-age child who weighs 55 lbs. The nurse should set the IV pump to deliver how many ml/hr? (Round to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: D
Rationale: Weight = 55 lb × 0.453592 = 24.95 kg. Volume = 20 mL/kg × 24.95 kg = 499 mL. Flow rate = 499 / 6 = 83.17 mL/hr, rounded to 83 mL/hr.