A patient with multiple sclerosis is having muscle spasticity. The nurse anticipates which drug will be prescribed to treat the patient’s spasticity?

Correct Answer: C

Rationale: The correct answer is C: Cyclobenzaprine. Cyclobenzaprine is a centrally acting muscle relaxant commonly used to treat muscle spasticity in conditions like multiple sclerosis. It works by inhibiting nerve impulses to reduce muscle spasms. Neostigmine (A) is a cholinesterase inhibitor used for myasthenia gravis, not spasticity. Ropinirole (B) is a dopamine agonist used for Parkinson's disease and restless legs syndrome, not spasticity. Pyridostigmine (D) is also a cholinesterase inhibitor used for myasthenia gravis, not spasticity.

Correct Answer: C

Rationale: Thioridazine has been associated with QT prolongation and a higher risk of cardiac arrhythmias.

Correct Answer: A

Rationale: Cimetidine decreases theophylline clearance; Ipratropium has anticholinergic activity with few side effects; Albuterol has high β2-adrenergic selectivity.

Correct Answer: A

Rationale: The patient's oversedation and spending the whole day dozing is a common side effect of Zolpidem, which is a sedative-hypnotic drug used for insomnia. Zolpidem is known to cause drowsiness and oversedation, especially in the elderly population. The patient taking a "sleeping pill" from a friend that he couldn't remember the name of is consistent with Zolpidem being the cause of his symptoms.

Correct Answer: A

Rationale: Aspirin (choice A) is linked to Reye's syndrome, a rare liver/brain disorder in children post-viral infection. Acetaminophen (choice B), Ibuprofen (choice C), and Naproxen (choice D) aren't associated. This contraindication limits aspirin's pediatric use.