ATI RN
Central Nervous System Stimulants and Related Drugs NCLEX Style Questions Questions
Question 1 of 5
Which of the following drugs was most likely prescribed for the woman described in the text?
Correct Answer: C
Rationale: Bupropion is a medication that is commonly used to treat depression, ADHD, and smoking cessation. Given the woman's symptoms of feeling fearful, helpless, and worried, as well as her difficulty organizing thoughts and smoking habit, bupropion would be a suitable choice as it can address both depressive and attention deficit disorders, as well as aid in smoking cessation.
Question 2 of 5
Which of the following statements concerning morphine and hydromorphone is true?
Correct Answer: D
Rationale: Hydromorphone is more potent than morphine because it requires a lower dose (smaller ED50) to produce the same analgesic effect.
Question 3 of 5
The consumption of shellfish harvested during a red tide (due to a large population of a dinoflagellate species) is not recommended. This is because the shellfish are likely to contain
Correct Answer: D
Rationale: Saxitoxin, produced by dinoflagellates, causes paralytic shellfish poisoning by blocking sodium channels.
Question 4 of 5
The rate at which inhalational anaesthetic passes into tissues depends on
Correct Answer: D
Rationale: The rate at which an inhalational anaesthetic reaches tissues is influenced by all the factors listed: the blood-tissue partition coefficient delivery rate and partial pressure.
Question 5 of 5
Trichloroethanol is the active metabolite of:
Correct Answer: D
Rationale: Chloral hydrate (choice D) is metabolized to trichloroethanol, which depresses the CNS, inducing sedation. Morphine (choice A) metabolizes to active compounds like morphine-6-glucuronide, not trichloroethanol. Clorazepate (choice B) becomes desmethyldiazepam, a benzodiazepine. Phenobarbitone (choice C) is a barbiturate, not metabolized to trichloroethanol. This identifies Chloral hydrate's metabolic pathway, key for its hypnotic use.