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
The prostanoid that consistently constricts blood vessels is
Correct Answer: C
Rationale: Thromboxane A2 is a potent vasoconstrictor and platelet aggregator, playing a key role in clot formation.
Question 3 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.
Question 4 of 5
Digoxin affords the following benefit(s) in CHF
Correct Answer: D
Rationale: Digoxin improves symptoms but does not prolong survival in CHF.
Question 5 of 5
Which of the following neurotransmitters has been most consistently implicated in the patient's disorder?
Correct Answer: A
Rationale: Acetylcholine has been consistently implicated in Alzheimer's disease, which is the disorder the 71-year-old man was diagnosed with. This neurotransmitter is involved in memory and cognitive function, both of which are affected in Alzheimer's disease. A drug that acts on the central cholinergic system would likely target acetylcholine to improve symptoms in this patient. The other neurotransmitters listed are not as strongly linked to Alzheimer's disease.