LPN Pharmacology Practice Questions Related

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Drugs that may cause anticholinergic effects include:

  • A. Diphenhydramine
  • B. Atenolol
  • C. Lisinopril
  • D. All of the above
Correct Answer: A

Rationale: Choice A is correct because diphenhydramine has strong anticholinergic effects (e.g., confusion, dry mouth), risky in the elderly, per Beers Criteria. Choice B is incorrect as atenolol (beta blocker) lacks anticholinergic action. Choice C is wrong because lisinopril (ACE inhibitor) doesn't affect cholinergic systems. Choice D is incorrect since only diphenhydramine applies.