Nokea
Genetic testing prior to prescribing which drug could prevent serious adverse drug reactions?
- A. Acetaminophen
- B. Codeine
- C. Albuterol
- D. All of the above
Correct Answer: B
Rationale: Choice B is correct because genetic testing for CYP2D6 variants can prevent ADRs with codeine; poor metabolizers get no pain relief, while ultrarapid metabolizers risk morphine toxicity. Choice A is incorrect as acetaminophen metabolism isn't strongly tied to genetic variants causing serious ADRs. Choice C is wrong because albuterol's inhaled use has minimal genetic metabolism risks. Choice D is incorrect since only codeine benefits significantly from pre-prescribing genetic testing.
You may also like to solve these questions
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.
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.
Resources for patients with drug abuse issues include:
- A. Substance Abuse and Mental Health Services Administration (SAMHSA)
- B. National Institute on Drug Abuse (NIDA)
- C. Local support groups
- D. All of the above
Correct Answer: D
Rationale: Choice D is correct because SAMHSA (helpline), NIDA (research/support), and local groups (e.g., AA) provide comprehensive resources for drug abuse, per national frameworks. Choice A is incorrect alone as it's one resource. Choice B is wrong by itself because NIDA is just part. Choice C is incorrect solo since groups are only one option.
An agonist activates a receptor and stimulates a response. When given frequently over time, the body may:
- A. Upregulate the total number of receptors
- B. Block the receptor with a partial agonist
- C. Alter the drug's metabolism
- D. Downregulate the numbers of that specific receptor
Correct Answer: D
Rationale: Choice D is correct because frequent agonist use can cause the body to downregulate receptors, reducing sensitivity to overstimulation as a compensatory mechanism. Choice A is incorrect as upregulation occurs with antagonists, not agonists. Choice B is wrong because partial agonists compete, not result from frequent use. Choice C is incorrect since metabolism changes aren't the primary receptor response.
Over-the-counter drugs that should be avoided in patients with hypertension include:
- A. Acetaminophen
- B. Pseudoephedrine
- C. Ibuprofen
- D. All of the above
Correct Answer: B
Rationale: Choice B is correct because pseudoephedrine, a decongestant, raises blood pressure via vasoconstriction, risky in hypertension, per guidelines. Choice A is incorrect as acetaminophen doesn't affect BP. Choice C is wrong because ibuprofen's BP effect is milder and not absolute avoidance. Choice D is incorrect since only pseudoephedrine is key.