ATI RN
Central Nervous System Stimulants and Related Drugs NCLEX Style Questions Questions
Question 1 of 5
Which of the following is the most trouble-shooter in spinal anaesthesia?
Correct Answer: A
Rationale: Sympathetic block can be the most troublesome in spinal anaesthesia leading to hypotension and other complications.
Question 2 of 5
Which of the following opiate receptors is paired correctly with a physiological or psychological action?
Correct Answer: C
Rationale: Mu receptors (choice C) mediate respiratory depression, a key morphine effect. Mu doesn't cause dysphoria (choice A), kappa causes dysphoria, not euphoria (choice B), and delta (choice D) isn't primarily dysphoric. This correct pairing reflects opioid pharmacology.
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
Which of the following effects most likely occurred during surgery?
Correct Answer: D
Rationale: The correct answer is D. Increased skeletal muscle tone, fever, skeletal muscle contractions, and diaphoresis are signs of malignant hyperthermia, a rare but life-threatening condition triggered by certain anesthesia agents like halothane and succinylcholine in susceptible individuals. This condition can lead to severe metabolic and respiratory acidosis, cardiac arrhythmias, and hyperkalemia.
Question 5 of 5
Which of the following opiate receptors is paired correctly with a physiological or psychological action?
Correct Answer: C
Rationale: Mu receptors (choice C) mediate respiratory depression, a key morphine effect. Mu doesn't cause dysphoria (choice A), kappa causes dysphoria, not euphoria (choice B), and delta (choice D) isn't primarily dysphoric. This correct pairing reflects opioid pharmacology.