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D116 WGU drugs Questions with Answers (100%
Correct Answers)
Bethanechol Answer: Prototype muscarinic agonist used for urinary
retention.
Mechanism of bethanechol Answer: Direct muscarinic receptor agonist
that stimulates parasympathetic activity, increasing bladder contraction
and GI motility.
Common side effects of bethanechol Answer: Bradycardia, hypotension,
diarrhea, salivation, bronchoconstriction.
Dosing and route for bethanechol Answer: 10-50 mg PO 3-4 times daily
on an empty stomach.
Key patient teaching point for bethanechol Answer: Take on an empty
stomach; report excessive sweating, salivation, or dizziness.
Neostigmine Answer: Prototype reversible cholinesterase inhibitor for
myasthenia gravis.
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Mechanism of neostigmine Answer: Inhibits acetylcholinesterase,
increasing acetylcholine levels at the neuromuscular junction.
Common side effects of neostigmine Answer: Cholinergic crisis,
bradycardia, GI cramps.
Dosing and route for neostigmine Answer: 15-375 mg/day PO in
divided doses; also available IV/IM.
Key patient teaching point for neostigmine Answer: Space doses evenly;
watch for drooling, diarrhea, or worsening weakness.
Atropine Answer: Prototype muscarinic antagonist.
Mechanism of atropine Answer: Competitive antagonist at muscarinic
receptors, blocking parasympathetic effects.
Common side effects of atropine Answer: Dry mouth, blurred vision,
urinary retention, constipation, tachycardia.
Dosing and route for atropine in bradycardia Answer: 0.5-1 mg IV (max
3 mg); also PO, IM, ophthalmic.
Key patient teaching point for atropine Answer: Avoid overheating, use
sugarless gum for dry mouth, caution with driving.
© 2025 All rights reserved
D116 WGU drugs Questions with Answers (100%
Correct Answers)
Bethanechol Answer: Prototype muscarinic agonist used for urinary
retention.
Mechanism of bethanechol Answer: Direct muscarinic receptor agonist
that stimulates parasympathetic activity, increasing bladder contraction
and GI motility.
Common side effects of bethanechol Answer: Bradycardia, hypotension,
diarrhea, salivation, bronchoconstriction.
Dosing and route for bethanechol Answer: 10-50 mg PO 3-4 times daily
on an empty stomach.
Key patient teaching point for bethanechol Answer: Take on an empty
stomach; report excessive sweating, salivation, or dizziness.
Neostigmine Answer: Prototype reversible cholinesterase inhibitor for
myasthenia gravis.
© 2025 All rights reserved
, 2
Mechanism of neostigmine Answer: Inhibits acetylcholinesterase,
increasing acetylcholine levels at the neuromuscular junction.
Common side effects of neostigmine Answer: Cholinergic crisis,
bradycardia, GI cramps.
Dosing and route for neostigmine Answer: 15-375 mg/day PO in
divided doses; also available IV/IM.
Key patient teaching point for neostigmine Answer: Space doses evenly;
watch for drooling, diarrhea, or worsening weakness.
Atropine Answer: Prototype muscarinic antagonist.
Mechanism of atropine Answer: Competitive antagonist at muscarinic
receptors, blocking parasympathetic effects.
Common side effects of atropine Answer: Dry mouth, blurred vision,
urinary retention, constipation, tachycardia.
Dosing and route for atropine in bradycardia Answer: 0.5-1 mg IV (max
3 mg); also PO, IM, ophthalmic.
Key patient teaching point for atropine Answer: Avoid overheating, use
sugarless gum for dry mouth, caution with driving.
© 2025 All rights reserved
