ATI LPN
ATI LPN Pharmacology Exam Questions
Extract:
Question 1 of 5
Calculate the following dosage using ratio and proportions method. Round answers to the nearest tenth. Order: Tegretol 200 mg p.o.t.i.d. Available
Correct Answer: B
Rationale: Assuming 100 mg tablets (implied), 200 mg / 100 mg/tab = 2 tablets.
Question 2 of 5
Calculate the following dosage using ratio and proportions method. Round answers to the nearest tenth. Order: Tegretol 200 mg p.o.t.i.d. Available
Correct Answer: B
Rationale: Assuming 100 mg tablets (implied), 200 mg / 100 mg/tab = 2 tablets.
Question 3 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 4 of 5
Calculate the dosage using the label below. Round to the nearest tenth place. Order: Bumex (bumetanide) 1 mg IV daily Available:
Correct Answer: C
Rationale: Concentration = 0.25 mg/mL. Volume = 1 mg / 0.25 mg/mL = 4 mL.
Question 5 of 5
A nurse is preparing to administer amoxicillin 30 mg/kg/day divided doses every 12 hr to a toddler who weighs 33 lb. Available is amoxicillin 200 mg/5 mL suspension. How many mL should the nurse administer every 12 hr? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: B
Rationale: Weight = 33 lb × 0.453592 = 14.97 kg. Daily dose = 30 mg/kg/day × 14.97 kg = 449.1 mg. Per dose = 449.1 / 2 = 224.55 mg. Volume = 224.55 × (5 mL / 200 mg) = 5.61 mL, rounded to 5.6 mL.