ATI RN
Central Nervous System Stimulants and Related Drugs NCLEX Style Questions Questions
Question 1 of 5
An endocrine gland that plays an important role in calcium metabolism is the:
Correct Answer: D
Rationale: The parathyroid (choice D) regulates calcium via PTH, increasing blood levels. Pancreas (choice A) manages glucose, adrenals (choice B) stress hormones, thyroid (choice C) metabolism via calcitonin. Parathyroid's calcium role is primary.
Question 2 of 5
Which of the following drugs was most likely prescribed for the 12-year-old girl with refractory absence seizures?
Correct Answer: B
Rationale: In this case, the neurologist decided to add a second-generation antiepileptic drug that blocks voltage-gated Na+ and Ca2+ channels and may inhibit the synaptic release of glutamate. Among the choices, Lamotrigine fits this description as it is known to block voltage-gated sodium channels, making it the most likely drug prescribed for the patient.
Question 3 of 5
Choose the correct statement from the following
Correct Answer: C
Rationale: Picrotoxin is a GABA-A receptor antagonist that blocks chloride channels, leading to convulsant effects.
Question 4 of 5
Diazoxide is an effective hypotensive, but it is not used long-term because
Correct Answer: D
Rationale: Diazoxide has multiple adverse effects including hyperglycemia fluid retention and hyperuricemia.
Question 5 of 5
Which drug most likely enhanced the action of vecuronium in the 66-year-old woman undergoing emergency surgery following a car accident?
Correct Answer: B
Rationale: Darifenacin, a muscarinic receptor antagonist used for urinary tract infections, may enhance the action of vecuronium by reducing the risk of cholinergic side effects, such as bradycardia or bronchoconstriction, associated with muscle relaxants. Gentamicin, Timolol, Latanoprost, and Lovastatin are unlikely to have a significant impact on the action of vecuronium in this context.