A nurse is caring for a patient being treated for newly diagnosed irritable bowel syndrome. The nurse should anticipate the administration of which muscarinic antagonist?
a. Bethanechol (Urecholine)
b. Pirenzepine and telenzepine
c. Physostigmine
d. Dicyclomine (Bentyl)
D
The nurse should administer dicyclomine, which is indicated for irritable bowel syndrome.
Bethanechol is a muscarinic agonist, not an antagonist, and would not be used to treat a patient with irritable bowel syndrome.
Pirenzepine and telenzepine are indicated for peptic ulcer disease, not irritable bowel syndrome.
Physostigmine is indicated for antimuscarinic poisoning.
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