LVN Pharmacology & Medication Administration 2

Question 1

A patient is prescribed warfarin. Which food should the LVN instruct the patient to keep consistent in their diet?

Accepted Answer

Vitamin K-rich foods like leafy greens

Answer

Vitamin K antagonizes warfarin's anticoagulant effect, so patients should keep intake consistent rather than eliminating it entirely.

Question 2

Which statement best describes the term 'half-life' of a drug?

Accepted Answer

Time for the body to eliminate half of the drug from plasma

Answer

Half-life is the time required for plasma concentration of a drug to decrease by 50%, which guides dosing intervals.

Question 3

An LVN is preparing to administer an IM injection to an adult. What is the maximum volume that should be administered in the deltoid muscle?

Accepted Answer

1 mL

Answer

The deltoid muscle is small and can only safely accommodate up to 1 mL of medication to prevent tissue damage.

Question 4

A patient receiving heparin develops signs of bleeding. Which medication should be available as the antidote?

Accepted Answer

Protamine sulfate

Answer

Protamine sulfate binds to heparin and neutralizes its anticoagulant effect, making it the specific antidote for heparin toxicity.

Question 5

Which route of administration provides the fastest drug absorption?

Accepted Answer

Intravenous

Answer

Intravenous administration delivers medication directly into the bloodstream, bypassing absorption and providing the fastest onset.

(LVN) Licensed Vocational Nurses Certification Practice Test