Nokea
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.
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Patients taking warfarin need to be educated about the vitamin K content of foods to avoid therapeutic failure. Foods high in vitamin K that should be limited to no more than one serving per day include:
- A. Spinach
- B. Milk
- C. Romaine lettuce
- D. Cauliflower
Correct Answer: A
Rationale: Spinach is high in vitamin K, which can antagonize warfarin's anticoagulant effect if consumed excessively.
Drugs which increase GABA levels in brain
- A. Diazepam
- B. Phenobarbitone
- C. Sodium valproate
- D. Carbamazepine
Correct Answer: C
Rationale: Sodium valproate increases GABA levels.
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.
Which of the following is a disadvantage of IM administration?
- A. Larger volumes can be used
- B. Can affect lab tests
- C. Painful
- D. B and C
Correct Answer: C
Rationale: Intramuscular (IM) administration is painful due to needle insertion, though larger volumes are an advantage; affecting lab tests is less specific, making C the primary disadvantage.
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.