LVN Pharmacology & Medication Administration — Questions and Answers
Question 1: What is the primary route of drug administration that ensures 100% bioavailability?
- Oral
- Intravenous (Correct answer)
- Subcutaneous
- Intramuscular
Correct answer: Intravenous
Intravenous (IV) administration ensures 100% bioavailability because the drug is delivered directly into the bloodstream, bypassing any absorption barriers. This means the entire dose immediately enters systemic circulation, making it the fastest and most complete route for drug delivery.
Question 2: Which organ is primarily responsible for metabolizing medications?
- Kidney
- Stomach
- Liver (Correct answer)
- Intestine
Correct answer: Liver
The liver is the primary organ responsible for metabolizing (breaking down) most medications through various enzymatic processes. This detoxification process converts drugs into more water-soluble forms, facilitating their excretion from the body and preventing accumulation of active drug.
Question 3: What does the 'five rights' of medication administration include?
- Right patient, drug, dose, route, and time (Correct answer)
- Right brand, expiration, location, nurse, and insurance
- Right patient, weight, route, insurance, and nurse
- Right bottle, dose, doctor, diet, and date
Correct answer: Right patient, drug, dose, route, and time
The 'five rights' of medication administration are fundamental safety checks designed to prevent medication errors. Ensuring the right patient receives the right drug, in the right dose, via the right route, at the right time significantly reduces the risk of harm and promotes patient safety.
Question 4: Which of the following is considered a high-alert medication?
- Acetaminophen
- Ibuprofen
- Insulin (Correct answer)
- Vitamin D
Correct answer: Insulin
Insulin is considered a high-alert medication because it carries an increased risk of causing significant patient harm when used in error. Errors with insulin, such as incorrect dosing, can lead to severe hypoglycemia or hyperglycemia, which can be life-threatening.
Question 5: Why is it important to review a patient's allergies before administering medication?
- To ensure correct diet.
- To verify insurance coverage.
- To avoid adverse reactions (Correct answer)
- To confirm diagnosis.
Correct answer: To avoid adverse reactions
Reviewing a patient's allergies before administering medication is critically important to prevent severe adverse reactions, including anaphylaxis, which can be life-threatening. This crucial step ensures patient safety by avoiding exposure to known allergens and selecting appropriate alternative medications.
Question 6: Which term describes the amount of drug required to produce a therapeutic effect?
- Toxicity
- Potency
- Dosage (Correct answer)
- Bioavailability
Correct answer: Dosage
Dosage refers to the specific amount of a drug administered to produce a therapeutic effect in a patient. It is carefully calculated based on factors like patient weight, age, and condition to achieve the desired outcome while minimizing adverse effects.
Question 7: What is the correct action if a nurse makes a medication error?
- Ignore it if no harm occurred.
- Report it immediately and document (Correct answer)
- Only tell the patient.
- Wait to see if symptoms develop.
Correct answer: Report it immediately and document
If a nurse makes a medication error, the correct action is to report it immediately to the charge nurse or physician and document the incident thoroughly. This ensures patient safety by allowing for prompt assessment and intervention, and helps identify system issues to prevent future errors.
Question 8: Which route of administration is used for vaccines?
- Oral
- Intramuscular (Correct answer)
- Sublingual
- Topical
Correct answer: Intramuscular
Intramuscular (IM) injection is the primary route for administering many vaccines because it delivers the antigen into muscle tissue, which has a rich blood supply and immune cells. This allows for effective absorption and a robust immune response, leading to better vaccine efficacy.
Question 9: What should be done before administering a controlled substance?
- Call the pharmacy.
- Document the reason and verify with a witness (Correct answer)
- Skip the dose if patient refuses.
- Double the dose for chronic pain.
Correct answer: Document the reason and verify with a witness
Administering controlled substances requires strict protocols due to their potential for abuse and diversion. Documenting the reason for administration and verifying the dose with a witness ensures accountability, prevents misuse, and adheres to legal and ethical standards for controlled substance management.
LVN Pharmacology & Medication Administration
What is the primary route of drug administration that ensures 100% bioavailability?