A patient with Parkinson's disease asks the nurse why anticholinergics are used in the treatment. Which response by the nurse is most accurate?
a. "These drugs help you urinate."
b. "These drugs will decrease your eye pressure."
c. "These drugs inhibit the action of acetylcholine."
d. "These drugs will assist in lowering your heart rate."
ANS: C
Anticholinergic agents inhibit the action of acetylcholine in the parasympathetic nervous system. These drugs occupy receptor sites at the parasympathetic nerve endings, preventing the action of acetylcholine. Inhibition of acetylcholine facilitates stimulation of the dopaminergic receptors, which relieves the symptoms associated with Parkinson's disease. Anticholinergic agents cause urinary retention, increase intraocular pressure, and increase the heart rate.
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