Nokea
Generic drugs may differ from brand-name drugs in:
- A. Active ingredient
- B. Inactive ingredients
- C. Therapeutic effect
- D. All of the above
Correct Answer: B
Rationale: Choice B is correct because generics may use different inactive ingredients (e.g., fillers, dyes) affecting appearance or tolerability, but not efficacy, per FDA rules. Choice A is incorrect as active ingredients must be identical. Choice C is wrong because therapeutic effects are equivalent. Choice D is incorrect since only inactive ingredients differ.
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Pharmacokinetic changes in the elderly that affect drug dosing include:
- A. Decreased renal function
- B. Increased liver metabolism
- C. Decreased body fat
- D. All of the above
Correct Answer: A
Rationale: Choice A is correct because decreased renal function in the elderly slows drug excretion, requiring dose adjustments to prevent accumulation, per geriatric pharmacology. Choice B is incorrect as liver metabolism decreases, not increases. Choice C is wrong because body fat increases, not decreases. Choice D is incorrect since only A is accurate.
Drugs that may increase risk of erectile dysfunction include:
- A. Testosterone
- B. Beta blockers
- C. Alpha blockers
- D. All of the above
Correct Answer: B
Rationale: Choice B is correct because beta blockers (e.g., propranolol) can cause erectile dysfunction by reducing blood flow, a known side effect. Choice A is incorrect as testosterone improves erectile function. Choice C is wrong because alpha blockers often treat ED causes. Choice D is incorrect since only beta blockers fit.
Drugs that may interact with vaccines include:
- A. Immunosuppressants
- B. Antibiotics
- C. Antihistamines
- D. All of the above
Correct Answer: A
Rationale: Choice A is correct because immunosuppressants (e.g., prednisone) reduce vaccine efficacy by weakening immune response, per CDC guidelines. Choice B is incorrect as antibiotics don't typically affect vaccines. Choice C is wrong because antihistamines lack vaccine interactions. Choice D is incorrect since only immunosuppressants apply.
A 4-month-old infant has a viral illness with high fever and cough. The infant's parent asks the NP about what to give the infant to help with symptoms. The NP should prescribe which of the following?
- A. Aspirin to treat the fever
- B. Acetaminophen as needed
- C. Dextromethorphan for coughing
- D. An antibiotic to prevent increased infection
Correct Answer: B
Rationale: The correct answer is B because acetaminophen is safe for infants to reduce fever. Choice A is incorrect (aspirin risks Reye’s syndrome). Choice C is wrong (dextromethorphan risks respiratory depression). Choice D is inaccurate (antibiotics don’t treat viral illness).
Herbal products that may increase INR include:
- A. Ginkgo biloba
- B. St John's wort
- C. Valerian root
- D. All of the above
Correct Answer: A
Rationale: Choice A is correct because ginkgo biloba can increase INR by enhancing warfarin's effect through antiplatelet activity, risking bleeding. Choice B is incorrect as St John's wort induces CYP2C9, decreasing INR and warfarin efficacy. Choice C is wrong because valerian root doesn't significantly alter INR. Choice D is incorrect since only ginkgo biloba increases INR.