ATI LPN
Pharmacology and the Nursing Process 10th Edition Test Bank
Chapter 21 : Cholinergic-Blocking Drugs Questions
Question 1 of 5
A patient has received an accidental overdose of intravenous atropine. Which drug will the nurse prepare to administer?
Correct Answer: D
Rationale: Physostigmine is the antidote for atropine overdose, as it inhibits cholinesterase, increasing acetylcholine to counteract anticholinergic effects. Atenolol, bethanechol, and dicyclomine are not appropriate for this situation.
Question 2 of 5
A 72-year-old man has a new prescription for an anticholinergic drug. He is an active man and enjoys outdoor activities, such as golfing and doing his own yard work. What will the nurse emphasize to him during the teaching session about his drug therapy?
Correct Answer: D
Rationale: Anticholinergic drugs decrease sweating, increasing the risk of heat stroke, especially in elderly patients during outdoor activities. Drowsiness, increased salivation, and diarrhea are not typical effects of anticholinergics.
Question 3 of 5
The nurse will monitor for which adverse effect when administering an anticholinergic drug?
Correct Answer: C
Rationale: Anticholinergic drugs commonly cause dry mouth due to reduced salivary secretions. They also cause urinary retention (not excessive urination), decreased sweating (not diaphoresis), and pupillary dilation (not constriction).
Question 4 of 5
The nurse is reviewing a patient's medication history and notes that the patient is taking the cholinergic blocker tolterodine. Which is an indication for this medication?
Correct Answer: C
Rationale:
Tolterodine is used to treat urge incontinence by reducing bladder detrusor overactivity. It is not indicated for irritable bowel disease, mydriasis, or preoperative secretion reduction.
Question 5 of 5
A patient has been taking tolterodine, but today her prescriber changed her to a newer drug, darifenacin. What advantage does darifenacin have over the tolterodine?
Correct Answer: D
Rationale: Darifenacin has a lower incidence of dry mouth due to its specificity for bladder muscarinic receptors over salivary glands. It is not more effective, does not reduce urinary retention, and is contraindicated in narrow-angle glaucoma.