Donepezil Drug Interactions Quiz
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Questions and Answers

What is the main concern with using memantine concurrently with other drugs?

  • Increased neuromuscular blockade and prolonged respiratory depression
  • Decreased anti-AChE effects of neostigmine or pyridostigmine
  • Interference with anticholinergic activity
  • Accumulation of the drug leading to increased adverse effects (correct)
  • Which of the following drug combinations should be avoided due to the risk of synergistic effects?

  • Neostigmine and aminoglycoside antibiotics
  • Cholinomimetics and other cholinesterase inhibitors (correct)
  • Pyridostigmine and corticosteroids
  • Memantine and succinylcholine
  • What is the recommended course of action if a patient is taking corticosteroids concurrently with neostigmine or pyridostigmine?

  • Increase the dose of neostigmine or pyridostigmine
  • Avoid concurrent use or provide respiratory support as needed (correct)
  • Discontinue the corticosteroids immediately
  • Monitor the patient for decreased anti-AChE effects
  • What is the primary concern with using magnesium concurrently with neostigmine or pyridostigmine?

    <p>Magnesium's direct depressant effect on skeletal muscle may antagonize the beneficial effects of the anti-AChE drugs</p> Signup and view all the answers

    What is the recommended course of action if a patient is taking local or general anesthetics, or antiarrhythmic drugs, concurrently with neostigmine?

    <p>Increase the dose of neostigmine</p> Signup and view all the answers

    What is the primary concern with using rivastigmine concurrently with anticholinergic drugs?

    <p>Rivastigmine may interfere with the activity of the anticholinergic drugs</p> Signup and view all the answers

    What is the effect of donepezil on anticholinergics?

    <p>Donepezil antagonizes the activity of anticholinergics</p> Signup and view all the answers

    What is the recommended action when donepezil is administered with bethanechol or succinylcholine?

    <p>Reduce the bethanechol dose if they must be given concurrently</p> Signup and view all the answers

    What is the potential effect of donepezil on drugs metabolized by CYP450 2D6 and 3A4 isoenzymes, such as ketoconazole and quinidine?

    <p>Donepezil may inhibit the metabolism of these drugs</p> Signup and view all the answers

    Which of the following statements regarding the interaction between galantamine and cimetidine is correct?

    <p>Cimetidine increases the bioavailability of galantamine by 16%</p> Signup and view all the answers

    What is the effect of paroxetine on galantamine?

    <p>Paroxetine increases the bioavailability of galantamine by 40%</p> Signup and view all the answers

    What is the recommended action when memantine is administered with drugs, diets, or clinical states that make urine alkaline?

    <p>Avoid concurrent use or monitor for increased drug effects</p> Signup and view all the answers

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