ATI RN
Pharmacology CNS Drugs Quiz Questions
Question 1 of 5
Psychic depression can be treated by the following:
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 2 of 5
Which of the following narcotics has the longest duration of effect?
Correct Answer: A
Rationale: Methadone (choice A), with a half-life of 24-36 hours, has the longest duration among these narcotics, ideal for addiction maintenance. Controlled-release morphine (choice B) lasts 12-24 hours, Levorphanol (choice C) 6-8 hours, and Fentanyl (choice D) 1-2 hours IV. Methadone's pharmacokinetics stand out.
Question 3 of 5
Which one of the following drugs can cause hypotension because it can block alpha-adrenergic receptors on vascular smooth muscle cells?
Correct Answer: D
Rationale: Phenothiazines (choice D), like chlorpromazine, block alpha-adrenergic receptors, causing vasodilation and hypotension. Clozapine (choice A) causes less alpha blockade, Diazepam (choice B) doesn't, and H1 blockers (choice C) cause sedation, not hypotension. This side effect is notable in phenothiazines.
Question 4 of 5
Which of the following antipsychotic medications has the greatest potential for extrapyramidal side effects?
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 5 of 5
A 72-year old woman with a long history of anxiety that has been treated with diazepam decides to triple her daily dose. Two days after her attempts at self-prescribing, she is found extremely lethargic and non-responsive. Respiration is 8/min and shallow. Which of the following drugs should we give to reverse these signs and symptoms?
Correct Answer: B
Rationale: Flumazenil (choice B) reverses benzodiazepine (diazepam) overdose, countering lethargy and respiratory depression by antagonizing GABAa receptors. Amphetamine (choice A) stimulates, Naltrexone (choice C) blocks opioids, and Physostigmine (choice D) treats anticholinergic toxicity. Flumazenil is specific.