Nokea
The following is the antithyroid mechanism of action of mercazolil:
- A. Inbits thyrotropic hormone production in pituitary
- B. Inhibits thyroid hormone synthesis in thyroid gland
- C. Interfere follicule cells in thyroid gland
- D. Interfere iod reaptake in thyroid gland
Correct Answer: B
Rationale: Mercazolil (methimazole) inhibits thyroid hormone synthesis by blocking thyroperoxidase activity in the thyroid.
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The intangible costs of drug therapy include:
- A. Loss of wages while undergoing therapy
- B. Inconvenience, pain, and suffering incurred with therapy
- C. Cost of medical equipment in the laboratory used to monitor therapeutic drug levels
- D. Cost of prescription drug coverage, such as Medicare Part D
Correct Answer: B
Rationale: Intangible costs are non-monetary, such as pain and suffering.
Herbs and supplements are regulated by the U.S. Food and Drug Administration.
- A. TRUE
- B. FALSE
Correct Answer: B
Rationale: Herbs and supplements are not regulated as drugs by the FDA; they fall under dietary supplement rules.
A patient comes to the ER having his quadriceps muscle constantly contracted, you should give him:
- A. Norepinephrine to stimulate the sympathetic nervous system
- B. An antagonist for Norepinephrine
- C. Agonist for acetylcholine
- D. Both B and C
Correct Answer: D
Rationale: Both B and C are correct: a norepinephrine antagonist (e.g., beta-blocker) or acetylcholine agonist (e.g., to relax via parasympathetic action) could relieve muscle contraction.
What does the nurse understand must occur in order to produce withdrawal syndrome?
- A. Addiction
- B. Craving
- C. Drug tolerance
- D. Physical dependence
Correct Answer: D
Rationale: Physical dependence causes withdrawal when a drug stops; addiction or tolerance don't suffice. Patients who develop a physical dependence on a drug will experience withdrawal syndrome when the drug is stopped.
The nurse explains the Drug Enforcement Agency's (DEA's) schedule of controlled substances to the nursing assistant who asks, Do you ever get a prescription for Schedule I medications? What is the nurse's best response?
- A. Schedule I medications have no medical use so they are not prescribed.
- B. Schedule I medications have the lowest risk for abuse and do not require a prescription.
- C. Schedule I medications are only prescribed in monitored units for patient safety.
- D. Schedule I medications are found in antitussives and antidiarrheals sold over the counter.
Correct Answer: A
Rationale: Schedule I medications have no medical use and are never prescribed. Schedule V medications have the lowest risk for abuse and are found mostly in antitussives and antidiarrheals but they are not sold over the counter.