A nurse is working as a member of a research team involved in exploring the unique response to drugs each individual displays based on genetic make-up. What is this area of study is called?
- A. Pharmacotherapeutics
- B. Pharmacodynamics
- C. Pharmacoeconomics
- D. Pharmacogenomics
Correct Answer: D
Rationale: Pharmacogenomics is the area of study that includes mapping of the human genome. In the future, medical care and drug regimens may be personally designed based on a patient's unique genetic make-up. Pharmacotherapeutics is the branch of pharmacology that deals with the uses of drugs to treat, prevent, and diagnose disease. Pharmacodynamics involves how a drug affects the body. Pharmacoeconomics includes the costs involved in drug therapy.
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Warfarin resistance may be seen in patients with VCORC1 mutation, leading to:
- A. Toxic levels of warfarin building up
- B. Decreased response to warfarin
- C. Increased risk for significant drug interactions with warfarin
- D. Less risk of drug interactions with warfarin
Correct Answer: B
Rationale: VCORC1 mutations reduce warfarin's anticoagulant effect , requiring higher doses, not toxicity or interaction changes .
Education of women who are being treated with ophthalmic antibiotics for conjunctivitis includes:
- A. Throwing away eye makeup and purchasing new
- B. Redness and intense burning is normal with ophthalmic antibiotics
- C. When applying eye ointment, set the tip of the tube on the lower lid and squeeze in 1/4 inch
- D. Use a cotton swab to apply ointment, spreading the ointment all over the lid and in the conjunctival sac
Correct Answer: A
Rationale: Discarding makeup prevents reinfection; burning isn't normal, and application is incorrect.
An overdose of amitriptyline may precipitate all the following adverse effects EXCEPT:
- A. Cardiac arrhythmias
- B. Hypotension
- C. Sedation
- D. Jaundice
Correct Answer: D
Rationale: Amitriptyline overdose does not typically cause jaundice; it causes anticholinergic and cardiac effects.
The nurse, assisting with Phase I drug studies, is talking with a woman who asks, Why cant I participate in this study? What would be the nurses best response?
- A. Drugs pose a greater risk to women of reproductive age.
- B. Drugs are only tested on men because they are stronger.
- C. Women are more prone to adverse effects from medications.
- D. Drugs affect women differently than they affect women.
Correct Answer: A
Rationale: Phase I drug trials usually involve healthy male volunteers because chemicals may exert an unknown and harmful effect on ova in women which could result in fetal damage when the woman becomes pregnant. Drugs are tested on both men and women, but women must be fully informed of risks and sign a consent stating they understand the potential for birth defects. Women are not more prone to adverse effects of medications. Although some drugs may affect women differently than men, this is a rationale for why drugs need to be tested on women, not an explanation of why women are not included in a Phase I study.
A nurse in the post-anesthesia recovery unit is caring for a client who received a nondepolarizing neuromuscular blocking agent and has muscle weakness. The nurse should anticipate a prescription for which of the following medications?
- A. Neostigmine
- B. Naloxone
- C. Dantrolene
- D. Vecuronium
Correct Answer: A
Rationale: Neostigmine reverses nondepolarizing neuromuscular blockers by increasing acetylcholine.