ATI LPN
ATI PN Pharmacology 2020 Questions
Extract:
Question 1 of 5
A nurse is preparing to administer gentamicin to a child who weighs 44 lb. The provider prescribes 6 mg/kg/day IV to be administered in three equal doses. Available is gentamicin 40 mg/mL. How many mL should the nurse administer with each dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: A
Rationale: 44 lb = 20 kg; 6 mg/kg/day = 120 mg/day; 120 mg / 3 doses = 40 mg/dose; 40 mg / 40 mg/mL = 1 mL/dose, rounded to 1 mL.
Question 2 of 5
A nurse is preparing to administer an antibiotic via intermittent IV bolus for a client who has a continuous IV infusion. Which of the following steps should the nurse take first?
Correct Answer: C
Rationale: Checking the IV site for infiltration ensures proper placement before administration, a critical first step. Hanging, wiping, and connecting follow this safety check.
Question 3 of 5
A nurse is reinforcing teaching with a client who has chronic stable angina and a new prescription for sublingual nitroglycerin. Which of the following instructions should the nurse include in the teaching?
Correct Answer: B
Rationale: Taking sublingual nitroglycerin before strenuous activity prevents angina. It's taken without water, up to three tablets (not four) in 15 minutes, and dissolved under the tongue (not chewed).
Question 4 of 5
A nurse is preparing to administer somatropin 0.24 mg/kg/week subcutaneously to be divided into six daily doses to a school-age child who weighs 66 lb. How many mg should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: A
Rationale: 66 lb = 30 kg; 0.24 mg/kg/week = 7.2 mg/week; 7.2 mg / 6 doses = 1.2 mg/dose, rounded to 1.2 mg.
Question 5 of 5
A nurse is talking with a client who has been taking levothyroxine to treat hypothyroidism. The nurse should instruct the client to avoid taking which of the following over-the-counter medications within 4 hr of taking levothyroxine?
Correct Answer: B
Rationale: Calcium supplements can interfere with levothyroxine absorption, reducing its effectiveness, and should be taken at least 4 hours apart. Fish oil, laxatives, and antihistamines do not have significant interactions with levothyroxine.