ATI LPN
ATI LPN Pharmacology Exam Questions
Extract:
Question 1 of 5
Which factors may affect drug absorption? (SELECT ALL THAT APPLY)
Correct Answer: A,B,C,E
Rationale: A: Affects absorption speed. B: Enhances permeability. C: Impacts solubility. E: Alters absorption rate. D relates to inhalation, not general absorption.
Question 2 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 3 of 5
A nurse is preparing to administer hydrocodone/acetaminophen 5 mg PO every 6 hr for pain. The amount available is hydrocodone/acetaminophen 7.5 mg/500 mg/15 mL elixir. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero. )
Correct Answer: D
Rationale: Concentration = 7.5 mg / 15 mL = 0.5 mg/mL. Volume = 5 mg / 0.5 mg/mL = 10 mL.
Question 4 of 5
A nurse is reinforcing teaching with a group of nurses about the administration of nitroglycerin. Which of the following routes of administration provides the most rapid onset for the client?
Correct Answer: D
Rationale: Sublingual nitroglycerin bypasses digestion, acting within 1-3 minutes.
Question 5 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.